A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

Applied Mechanics and Graphic Statics
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

30 m/sec

50 m/sec

40 m/sec

20 m/sec

30 m/sec

50 m/sec

40 m/sec

20 m/sec

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Applied Mechanics and Graphic Statics
Ball ‘A’ of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball ‘B’ on the table. If the impact is perfectly elastic, the velocity of the ball ‘B’ just after impact would be

10 m/sec

None of these

5 m/sec

Zero

10 m/sec

None of these

5 m/sec

Zero

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Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

That polygon of forces must close

That resultant couple must be zero

None of these

Both (A) and (B)

That polygon of forces must close

That resultant couple must be zero

None of these

Both (A) and (B)

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Applied Mechanics and Graphic Statics
Kinetic friction may be defined as

Friction force acting when the body is just about to move

Friction force acting when the body is in motion

Angle between normal reaction and resultant of normal reaction and limiting friction

Ratio of limiting friction and normal reaction

Friction force acting when the body is just about to move

Friction force acting when the body is in motion

Angle between normal reaction and resultant of normal reaction and limiting friction

Ratio of limiting friction and normal reaction

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Applied Mechanics and Graphic Statics
A system of coplanar forces is in equilibrium when

Both force polygon" and funicular polygon close

Funicular polygon closes

Force polygon closes

All the forces are concurrent

Both force polygon" and funicular polygon close

Funicular polygon closes

Force polygon closes

All the forces are concurrent

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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

√2 T

3 T

1/2 T

2 T

√2 T

3 T

1/2 T

2 T

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics Ball ‘A’ of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball ‘B’ on the table. If the impact is perfectly elastic, the velocity of the ball ‘B’ just after impact would be

Applied Mechanics and Graphic Statics The condition of equilibrium for any system of forces in a plane is

Applied Mechanics and Graphic Statics Kinetic friction may be defined as

Applied Mechanics and Graphic Statics A system of coplanar forces is in equilibrium when

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
Ball ‘A’ of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball ‘B’ on the table. If the impact is perfectly elastic, the velocity of the ball ‘B’ just after impact would be

Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

Applied Mechanics and Graphic Statics
Kinetic friction may be defined as

Applied Mechanics and Graphic Statics
A system of coplanar forces is in equilibrium when

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