In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

Applied Mechanics and Graphic Statics
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

5

314

25

1.5

5

314

25

1.5

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Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Imaginary work

Zero work

Negative work

Virtual work

Imaginary work

Zero work

Negative work

Virtual work

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Applied Mechanics and Graphic Statics
A quantity whose dimensions are M2L2T3 could be the product of

mass and power

force and velocity

force and pressure

energy and velocity

mass and power

force and velocity

force and pressure

energy and velocity

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Applied Mechanics and Graphic Statics
If a set of given forces are such that their free vectors build a closed polygon, then

The resultant force and resultant couple are always zero

The resultant force and resultant couple both may not be zero

The resultant force is zero but resultant couple may not be zero

The resultant force is zero but resultant couple is not zero

The resultant force and resultant couple are always zero

The resultant force and resultant couple both may not be zero

The resultant force is zero but resultant couple may not be zero

The resultant force is zero but resultant couple is not zero

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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
A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?

45°

15°

30°

75°

45°

15°

30°

75°

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

Applied Mechanics and Graphic Statics If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Applied Mechanics and Graphic Statics A quantity whose dimensions are M2L2T3 could be the product of

Applied Mechanics and Graphic Statics If a set of given forces are such that their free vectors build a closed polygon, then

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

Applied Mechanics and Graphic Statics A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?

Applied Mechanics and Graphic Statics
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Applied Mechanics and Graphic Statics
A quantity whose dimensions are M2L2T3 could be the product of

Applied Mechanics and Graphic Statics
If a set of given forces are such that their free vectors build a closed polygon, then

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

Applied Mechanics and Graphic Statics
A stone is thrown up a slope of inclination 60° to the horizontal. At what angle to the slope must the stone be thrown so as to land as far as possible from the point of projection ?