APPLIED MECHANICS AND GRAPHIC STATICS QUIZ

A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)

(2/3) g sin 0

(1/3) g sinB

g sin 9

(2/3) g cos 9

TRUE ANSWER : ?
YOUR ANSWER : ?

A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at 3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is

2.5 m/sec

0.5 m/sec

1.5 m/sec

1.0 m/sec

TRUE ANSWER : ?
YOUR ANSWER : ?

On a mass ‘m’ describing a circular path of radius ‘r’, the centrifugal force

Acts towards the centre of rotation

Is mw2r/g kgf

Acts away from the centre of rotation

Acts tangentially to the circular path

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is

Greater than 2

Between 1 and 2

Equal to 1

Less than 1

TRUE ANSWER : ?
YOUR ANSWER : ?

When a body moves round a fixed axis, it has

A rotary motion

A rotary motion and translatory motion

A translatory

A circular motion

TRUE ANSWER : ?
YOUR ANSWER : ?

A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²)

25 m/sec

15 m/sec

40 m/sec

50 m/sec

TRUE ANSWER : ?
YOUR ANSWER : ?

The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is

Weight

Momentum

Inertia

Mass

TRUE ANSWER : ?
YOUR ANSWER : ?

On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts

Upwards at its upper end

Downwards at its upper end

Towards the wall at its upper end

Away from the wall at its upper end

TRUE ANSWER : ?
YOUR ANSWER : ?

At the instantaneous center, the velocity of the moving lamina at any instant is

Zero

Minimum

Maximum

Varying

TRUE ANSWER : ?
YOUR ANSWER : ?

A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is

0.25

0.50

0.75

1.0

TRUE ANSWER : ?
YOUR ANSWER : ?

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