ENGINEERING MECHANICS QUIZ

The bodies which rebound after impact are called

Inelastic bodies

Neither elastic nor inelastic bodies

None of these

Elastic bodies

TRUE ANSWER : ?
YOUR ANSWER : ?

The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of percussion

Center of gravity

Center of mass

Moment of inertia

TRUE ANSWER : ?
YOUR ANSWER : ?

When two elastic bodies collide with each other,

The two bodies tend to compress and deform at the surface of contact

All of these

The two bodies will momentarily come to rest after collision

The two bodies begin to regain their original shape

TRUE ANSWER : ?
YOUR ANSWER : ?

The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = r / α

a = α.r

a = α/ r

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

A smooth cylinder lying on a __________ is in neutral equilibrium.

Curved surface

Horizontal surface

Convex surface

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

2L/3

3L/4

L/3

L/2

TRUE ANSWER : ?
YOUR ANSWER : ?

The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P sinθ/2

2P tanθ/2

2P cosθ/2

2P cotθ/2

TRUE ANSWER : ?
YOUR ANSWER : ?

The angle between two forces when the resultant is maximum and minimum respectively are

90° and 0°

0° and 180°

180° and 0°

90° and 180°

TRUE ANSWER : ?
YOUR ANSWER : ?

The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

Less than

Greater than

Equal to

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Thrice

Twice

Same as

Four times

TRUE ANSWER : ?
YOUR ANSWER : ?