# 1000+ Applied Mechanics MCQ Questions and Answers - 1

Question: 1

A heavy ladder resting on a floor and against a

(A) floor and wall both are smooth surfaces

(B) floor and wall both are rough surfaces

(C) floor is smooth and the wall is rough

(D) floor is rough and the wall is smooth

Ans: A

floor and wall both are smooth surfaces

Question: 2

The velocity of a moving body is

(A) a constant quantity

(B) a scalar quantity

(C) a vector quantity

(D) none of these

Ans; C

a vector quantity

Question: 3

Periodic time of body moving with simple harmonic motion is

(A) inversely proportional to its angular velocity

(B) inversely proportional to the square of its angular velocity

(C) directly proportional to the square of its angular velocity

(D) directly proportional to its angular velocity

Ans: A

inversely proportional to its angular velocity

Question: 4

A rigid body suspended vertically at a point and oscillating with a small amplitude under the action of the force of gravity is called

(A) second's pendulum

(B) simple pendulum

(C) compounder pendulum

(D) none of these

Ans: C

compounder pendulum

Question: 5

Newton's law of motion of rotation which states, Everybody continues in its state of rest or uniform motion of rotation about an axis unless it is acted upon by some external torque is

(A) first law of motion

(B) second law of motion

(C) third law of motion

(D) fourth law of motion

Ans: A

first law of motion

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