The following statement is one of the laws of Dynamic friction

Applied Mechanics and Graphic Statics
The following statement is one of the laws of Dynamic friction

For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed

All of these

The force of friction always acts in a direction opposite to that in which a body is moving

The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction

For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed

All of these

The force of friction always acts in a direction opposite to that in which a body is moving

The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction

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Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

2u cotα/g

2u sinα/g

2u tanα/g

2u cosα/g

2u cotα/g

2u sinα/g

2u tanα/g

2u cosα/g

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Applied Mechanics and Graphic Statics
A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

2

3

43832

43892

2

3

43832

43892

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Applied Mechanics and Graphic Statics
A Seconds pendulum executes

1.0 beat per second

0.5 beat per second

2.0 beats per second

2.5 beats per second

1.0 beat per second

0.5 beat per second

2.0 beats per second

2.5 beats per second

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Applied Mechanics and Graphic Statics
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

50

60

80

30

50

60

80

30

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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

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

Friction force acting when the body is in motion

Ratio of limiting friction and normal reaction

Friction force acting when the body is just about to move

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

Friction force acting when the body is in motion

Ratio of limiting friction and normal reaction

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics The following statement is one of the laws of Dynamic friction

Applied Mechanics and Graphic Statics Time of flight of a projectile on a horizontal plane, is

Applied Mechanics and Graphic Statics A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

Applied Mechanics and Graphic Statics A Seconds pendulum executes

Applied Mechanics and Graphic Statics In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

Applied Mechanics and Graphic Statics Kinetic friction may be defined as

Applied Mechanics and Graphic Statics
The following statement is one of the laws of Dynamic friction

Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

Applied Mechanics and Graphic Statics
A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

Applied Mechanics and Graphic Statics
A Seconds pendulum executes

Applied Mechanics and Graphic Statics
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is

Applied Mechanics and Graphic Statics
Kinetic friction may be defined as