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2017 Mechanics paper

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list of formulas and other necessary things with respect to statics.

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A string ABCD, attached to fixed points A and D has two equal weihts of1000 N attached to it at B and C. The weights rest with the portions AB and CD inclined at angles.Find the tensions in the portions AB, BC and CD of the string, if the inclination of the portionBC with the vertical is 120°.

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A string ABCD, attached to fixed points A and D has two equal weihts of1000 N attached to it at B and C. The weights rest with the portions AB and CD inclined at angles.Find the tensions in the portions AB, BC and CD of the string, if the inclination of the portionBC with the vertical is 120°.

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Ans. Tab=1732N
Tbc=1000N
TCD =1000N

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2.The following forces act at a point :(i) 20 N inclined at 30° towards North of East,(ii) 25 N towards North,(iii) 30 N towards North West, and(iv) 35 N inclined at 40° towards South of West.Find the magnitude and direction of the resultant force.

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2.The following forces act at a point :(i) 20 N inclined at 30° towards North of East,(ii) 25 N towards North,(iii) 30 N towards North West, and(iv) 35 N inclined at 40° towards South of West.Find the magnitude and direction of the resultant force.

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Ans. R=45.6N  θ = 47.7°

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3.An electric light fixture weighting 15 N hangs from a point C, by two stringsAC and BC. The string AC is inclined at 60° to the horizontal and BC at 45° to the horizontal

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3.An electric light fixture weighting 15 N hangs from a point C, by two stringsAC and BC. The string AC is inclined at 60° to the horizontal and BC at 45° to the horizontal

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Ans Tac=10.98N Tbc=7.76N

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1.The forces 20 N, 30 N, 40 N, 50 N and 60 N are acting at one of the angular
points of a regular hexagon, towards the other five angular points, taken in order. Find the magnitude
and direction of the resultant force.
Ans.R=155.8 N θ = 76.6°

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who have solved the assignment problem ??

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Good.. I hope all of are engaged yourselves in learning the basics concept of physics which are necessary for understanding the concepts of Engineering Mechanics

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Good.. I hope all of are engaged yourselves in learning the basics concept of physics which are necessary for understanding the concepts of Engineering Mechanics

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I hope you are gradually adjusting yourselves to 2nd semester

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Mass is a constant at all values of acceleration due to gravity whereas weight varies with gravity according to the formula w=mg where g is the acceleration due to gravity, m is the mass of the body and w is it's weight.