A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

Applied Mechanics and Graphic Statics
A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

43839

44052

43864

43833

43839

44052

43864

43833

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Applied Mechanics and Graphic Statics
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

400 J

200 J

50 J

150 J

400 J

200 J

50 J

150 J

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Applied Mechanics and Graphic Statics
One Joule is equivalent to

1 Newton metre

1 dyne metre

1 kg wt metre

9.81 Newton metre

1 Newton metre

1 dyne metre

1 kg wt metre

9.81 Newton metre

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Applied Mechanics and Graphic Statics
One end of an elastic string of natural length ‘l’ and modulus ‘X’ is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance ‘x’, held at rest and then released.The motion is

A rectilinear motion with constant speed

A simple harmonic motion

A damped oscillatory motion

None of these

A rectilinear motion with constant speed

A simple harmonic motion

A damped oscillatory motion

None of these

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Applied Mechanics and Graphic Statics
The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

Westward

Northward

Southward

Eastward

Westward

Northward

Southward

Eastward

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Applied Mechanics and Graphic Statics
For perfectly elastic bodies, the value of coefficient of restitution is

1

0.5

Between 0 and 1

Zero

1

0.5

Between 0 and 1

Zero

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

Applied Mechanics and Graphic Statics A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

Applied Mechanics and Graphic Statics One Joule is equivalent to

Applied Mechanics and Graphic Statics The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

Applied Mechanics and Graphic Statics For perfectly elastic bodies, the value of coefficient of restitution is

Applied Mechanics and Graphic Statics
A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is

Applied Mechanics and Graphic Statics
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

Applied Mechanics and Graphic Statics
One Joule is equivalent to

Applied Mechanics and Graphic Statics
The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

Applied Mechanics and Graphic Statics
For perfectly elastic bodies, the value of coefficient of restitution is