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3 D 13611

Section C (Essay Type)
Answer in about two pages, any one question.

Answer carries 10 marks.

20. State Newton’s laws of motion. Apply Newtons laws to find the accelerations of two astronauts of
masses M, and Mg pulling on either ends of a rope of negligible mass.

21. State and explain law of conservation of Angular Momentum for a system of particles. Express the
torque acting on a rigid body in a uniform gravitational field in terms of position of centre of mass
and the weight of the body.

(1 x 10 = 10 marks)

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