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

43864

43833

43839

44052

43864

43833

43839

44052

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Applied Mechanics and Graphic Statics
The velocity of a body fallen from height ‘h’, on reaching the ground is given by

v = √(2gh)

v = 2gh

v = 2gh²

v = 1/√(2gh)

v = √(2gh)

v = 2gh

v = 2gh²

v = 1/√(2gh)

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Applied Mechanics and Graphic Statics
If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be

1/2 T

2 T

√2 T

3 T

1/2 T

2 T

√2 T

3 T

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Applied Mechanics and Graphic Statics
The force polygon representing a set of forces in equilibrium is a

Parallelogram

Open polygon

Triangle

Closed polygon

Parallelogram

Open polygon

Triangle

Closed polygon

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Applied Mechanics and Graphic Statics
The condilion for a lifting machine to be reversible is that its efficiency should be

less than 50%

more than 50%

more than 66.67%

equal to 100%

less than 50%

more than 50%

more than 66.67%

equal to 100%

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Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is

Centroid

Spiral

Involute

Straight line

Centroid

Spiral

Involute

Straight line

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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 The velocity of a body fallen from height ‘h’, on reaching the ground is given by

Applied Mechanics and Graphic Statics If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be

Applied Mechanics and Graphic Statics The force polygon representing a set of forces in equilibrium is a

Applied Mechanics and Graphic Statics The condilion for a lifting machine to be reversible is that its efficiency should be

Applied Mechanics and Graphic Statics The locus of the instantaneous centre of a moving rigid body, 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
The velocity of a body fallen from height ‘h’, on reaching the ground is given by

Applied Mechanics and Graphic Statics
If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be

Applied Mechanics and Graphic Statics
The force polygon representing a set of forces in equilibrium is a

Applied Mechanics and Graphic Statics
The condilion for a lifting machine to be reversible is that its efficiency should be

Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is