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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

Nature of surfaces
All of these
Area of contact
Shape of the surfaces

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Engineering Mechanics
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

2 m
3 m
4 m
1 m

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Less than
Equal to
None of these
Greater than

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Engineering Mechanics
When the spring of a watch is wound, it will possess

Heat energy
Electrical energy
Kinetic energy
Strain energy

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Engineering Mechanics
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is

mv2
0.5 mv2
0.5 mgv2
mgv2

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

Newton's first law of motion
Newton's third law of motion
None of these
Newton's second law of motion

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