https://padlet.com/chan_pui_san_a/p9kb3bt7wskp Must Come Down? en-us 2018-03-27 06:38:49 UTC 2024-11-03 05:33:02 UTC hello@padlet.com chan_pui_san_a https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246370556 Look at the diagram below. At which stage(s) does gravity act on the aeroplane? Explain your answer. ]]> 2018-03-27 06:47:13 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246370556 chan_pui_san_a https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246371315 When Jiaxin pushed magnet A towards Magnet B as shown in Diagram 2, he found that he needed to push harder as distance P decreased. Explain why. ]]> 2018-03-27 06:51:14 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246371315 chan_pui_san_a https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246371588 A toy ball, G, floated above a base because of magnetic force as shown in Diagram 3. A second toy ball, H, had a rod through its centre that was connected to the base as shown in Diagram 4. Both balls were made of the same material and  were the same size. 

When the balls were rotated with the same amount of force, explain why H stopped rotating after a few rounds but G continued to rotate many more rounds before stopping.]]> 2018-03-27 06:52:37 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246371588 chan_pui_san_a https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246372700 2018-03-27 06:58:15 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246372700 chan_pui_san_a https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246372790 2018-03-27 06:58:47 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246372790 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722835 1. It can push people 2. It can pull people 3 it can change the size of object of things 

]]> 2018-03-28 00:14:49 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722835 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722878 Every stages. Gravity acts on all objects whether they are in the air or on land.]]> 2018-03-28 00:15:02 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722878 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722967 It acts at all stages. When the plane is taking off and flying, although gravity is pulling it down, the plane has more than enough energy to do against energy. When it’s landing, it’s going along with gravity, so it will go faster when landing than taking off and flying]]> 2018-03-28 00:15:48 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246722967 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723002 Every stage as gravity is always acting on everything on earth ]]> 2018-03-28 00:16:01 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723002 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723039 Every stage.As gravity acts on everything on Earth]]> 2018-03-28 00:16:23 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723039 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723065 Gravity acts on the aeroplane at all stages.As Long as the plane is within the earth’s atmosphere,gravity will act on it]]> 2018-03-28 00:16:35 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723065 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723104 All stages, because gravity will act on everything that is on or close to Earth]]> 2018-03-28 00:16:51 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723104 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723145 All three stages, because everything on earth has gravity acting on it.


]]> 2018-03-28 00:17:02 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723145 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723182 On all stages, as Long as the plane is on earth, gravity willl act on it]]> 2018-03-28 00:17:22 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723182 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723282 The like poles of the magnets are facing each other so they repelled.As Jiaxin pushed the magnets towards each other, the repulsion between the magnets became stronger so he found it harder to push the magnets down.

]]> 2018-03-28 00:18:18 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723282 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723318 When landing the plane uses gravitational force]]> 2018-03-28 00:18:33 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723318 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723362 Gravity acts on every stage because each aeroplane act is performed on Earth. ]]> 2018-03-28 00:18:50 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723362 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723378 All stages, because all the stages are performed on Earth. 

I think I’m wrong]]> 2018-03-28 00:18:57 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723378 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723401 Magnet B was exerting it’s magnetic force on Magnet A, and it became harder to push it down at distance p as the magnetic force becomes stronger the closer you come to it]]> 2018-03-28 00:19:07 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723401 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723417 All stages, gravity acts on all objects at any time]]> 2018-03-28 00:19:16 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723417 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723423 At all stages. The gravitational force pulls anything at its border, so the plane will have GPE at all stages.

]]> 2018-03-28 00:19:17 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723423 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723436 All three stages because gravity acts on all objects whether they are in air or on the ground.

]]> 2018-03-28 00:19:24 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723436 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723459 The like poles of the magnets were facing each other, so the closer the magnets were to each other, the stronger the repulsion, so Jiaxin had to use more force.]]> 2018-03-28 00:19:33 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723459 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723486 The repulsion of both the magnets caused Jia Xin to push the magnet harder .]]> 2018-03-28 00:19:40 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723486 TingSY https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723537 The like poles are facing each other,so the magnets repel each other and causing the like poles to be harder to push towards each other

]]> 2018-03-28 00:19:58 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723537 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723590 The friction between ball H and the rod slows down ball H while ball G continues spinning as it moves by magnetic force, so G will continue spinning until it stops.

]]> 2018-03-28 00:20:26 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723590 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723607 yes? because the plane is on earth so gravitational force will be acting on it.

]]> 2018-03-28 00:20:33 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723607 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723634 He needed to push harder as the magnets are exerting a repelling force as they are pushing each other away from each other]]> 2018-03-28 00:20:50 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723634 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723702
There was no friction acting on the ball of Diagram 3 so it continues to spin. Whereas there was friction acting on the ball of Diagram 4 so it stopped spinning ]]> 2018-03-28 00:21:11 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723702 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723865 Da magnet stoped the ball in diagram 3 from spinning as the exerted a magnetic force]]> 2018-03-28 00:22:09 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723865 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723929 The friction between the rod and ball H caused the ball to stop after a few rounds while ball G had no friction between the base and the ball as the like poles of the magnets inside the ball and the base were facing each other so they repelle]]> 2018-03-28 00:22:38 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723929 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723962 What would happen if there is too much gravity on Earth?]]> 2018-03-28 00:22:48 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723962 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723966 As the like poles of the magnets are facing each other, they are repelling each other so Jiaxin needs to push harder.]]> 2018-03-28 00:22:51 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723966 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723989 Magnet B is exerting a magnetic force of repulsion , hence a greater push force was needed to overcome the magnetic force of repulsion]]> 2018-03-28 00:23:01 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246723989 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724071 It acts at all stages because gravity is everywhere. When the plane is taking off and flying it is going against gravity therefore it moves slower than the plane landing because it is going with gravity.]]> 2018-03-28 00:23:25 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724071 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724134 - A force is a push or a pull
- We use energy to exert a force
- We cannot see force but we can observe the effects of a ]]> 2018-03-28 00:23:56 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724134 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724149 Gravity acts on the plane ]]> 2018-03-28 00:24:04 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724149 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724159 It is all three of them because while it is taking off, it is going up and gravitational force is acting on it. While it is flying, the gravitational force is all around it and while it is landing,the gravitational force pulls it down]]> 2018-03-28 00:24:09 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724159 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724189 there is more “repelling” between the magnets as the like poles are getting pushed even more]]> 2018-03-28 00:24:28 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724189 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724208 Can there be any literal sense to may the force be with u

]]> 2018-03-28 00:24:40 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724208 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724256 H had friction as it was spinning against the rod, causing it to slow down and eventually stop faster than B, which did not have friction. ]]> 2018-03-28 00:24:59 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724256 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724276 The ball H had a rod through its centre so when the the ball rotated against the rod frictional force was used and soon it slowed down and stopped.]]> 2018-03-28 00:25:11 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724276 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724289 Ball H has friction between itself and the rod, while Ball G does not, so Ball H stops faster than Ball G.]]> 2018-03-28 00:25:16 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724289 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724327 All stages in the diagram. If it wasn’t, the airplane would have been floating at all times. Even before taking off and after landing]]> 2018-03-28 00:25:30 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724327 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724328 Gravity acts on the plane when it is landing]]> 2018-03-28 00:25:31 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724328 TingSY https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724329 There is frictional force between toy H and the pole/stick but G does not as the magnets are not in contact and friction only take place in contact 
(he should put stablizers though) ]]> 2018-03-28 00:25:32 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724329 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724393 What if gravitational force acted in the opposite direction
(For example - pulling things upwards instead of downwards)]]> 2018-03-28 00:26:05 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724393 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724444 1) It can push
2) It can pull
3) It can change the size of something (like when pulling the slime it change shape)
4)it is spelt F-O-R-C-E

]]> 2018-03-28 00:26:26 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724444 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724478

At All the stages . Gravity acts wherever you are 

]]> 2018-03-28 00:26:37 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724478 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724542 All stages

]]> 2018-03-28 00:27:05 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724542 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724585 There was more frictional force in H since it was rubbing against the rod. G was not rubbing against any surface, so less frictional force was produced, thus allowing G to continue turning]]> 2018-03-28 00:27:22 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724585 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724711 There is friction between the rod and ball H and the friction caused the ball to stop moving. However, there is no friction between the base and ball G as they are not in contact so it stops rotating slower than ball H.]]> 2018-03-28 00:28:13 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724711 TingSY https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724800 1⃣️Force can act in contact and with a distance. 
2⃣️Force can be harmful and helpful. 
3⃣️Force in invisible but its effects can be seen]]> 2018-03-28 00:28:45 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724800 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724852 Diagram 4 ball H was connected to base using a rod so when the same amount of force applied to ball G the frictional force was greater than ball G as the ball was rubbing against the rod and the air thus rotating lesser than ball G, Diagram 3, ball G rotated longer since it was floating in the air due to the magnets in the ball and the base repelling each other so when ball G was rotated with the same amount of force the ball had less frictional force applied to since it was not rubbing against any surfaces except the air thus rotating more]]> 2018-03-28 00:28:59 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724852 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724853 It can be a push,pull and change the shape of a object]]> 2018-03-28 00:28:59 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246724853 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725437 There is frictional force between ball H but ball G does not as the magnets are not in contact.]]> 2018-03-28 00:33:30 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725437 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725484 1) A force is a push or a pull
2) There are frictional force and gravitational force.
3) There is magnetic force and elastic spring force ]]> 2018-03-28 00:33:51 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725484 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725498 The magnet had slowed the one in the air but no magnet was acting upon the other one and slowing itdown

]]> 2018-03-28 00:34:00 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725498 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725500 Since Ball G was in contact with the air and Ball H was in contact with the rod , the friction force between ]]> 2018-03-28 00:34:02 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725500 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725530 Force is a push or a pull done by a person.It changes the object's direction and speed.]]> 2018-03-28 00:34:15 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246725530 https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246726329 Since there’s a rod inside Diagram 4, it increases friction , and it opposes motion. ]]> 2018-03-28 00:39:48 UTC https://padlet.com/chan_pui_san_a/p9kb3bt7wskp/wish/246726329