1000+ Applied Mechanics Objective Questions and Answers - 1

Question: 1

The force acting on a point on the surface of a rigid body may be considered to act

(A) at the centre of gravity of the body

(B) on the periphery of the body

(C) at any point on the surface normal to the line of action of the force

(D) on any point on the line of action of the force

Ans: D

on any point on the line of action of the force

Question: 2

A smooth cylinder lying on its convex surface remains

(A) in neutral equilibrium

(B) out of equilibrium

(C) in stable equilibrium

(D) in unstable equilibrium

Ans: D

in unstable equilibrium

Question: 3

Centre of gravity of a thin hollow cone lies on the axis of symmetry at a height of

(A) one half of the total height above base

(B) one fourth of the total height above base

(C) one third of the total height above base

(D) none of these

Ans: C

one third of the total height above base

Question: 4

The angle of friction is

(A) the force of friction at which the body is just about to move

(B) the angle between the normal reaction and the resultant of normal reaction and limiting friction

(C) the force of friction when the body is in motion

(D) the ratio of the friction and the normal reaction

Ans: B

the angle between the normal reaction and the resultant of normal reaction and limiting friction

Question: 5

Centrifugal force acting on a body, moving along a circular path, will be

(A) equal and opposite to centripetal force

(B) equal and similar to centripetal force

(C) inversely proportional to centripetal force

(D) proportional to centripetal force

Ans: A

equal and opposite to centripetal force

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