A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

Engineering Mechanics
A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

Decrease

Not be effected

Increase

None of these

Decrease

Not be effected

Increase

None of these

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Engineering Mechanics
In order to determine the effects of a force, acting on a body, we must know

Magnitude of the force

Line of action of the force

Nature of the force i.e. whether the force is push or pull

All of these

Magnitude of the force

Line of action of the force

Nature of the force i.e. whether the force is push or pull

All of these

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Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Increasing the number of teeth of the pinion

All of these

Increasing the length of the handle

Increasing the radius of the load drum

Increasing the number of teeth of the pinion

All of these

Increasing the length of the handle

Increasing the radius of the load drum

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Engineering Mechanics
The centre of percussion is below the centre of gravity of the body and is at a distance equal to

kG2/h

h2/kG

h/kG

h × kG

kG2/h

h2/kG

h/kG

h × kG

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG - Ah2

IP = IG + Ah2

IP = Ah2 / IG

IP = IG / Ah2

IP = IG - Ah2

IP = IG + Ah2

IP = Ah2 / IG

IP = IG / Ah2

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Engineering Mechanics
In ideal machines, mechanical advantage is __________ velocity ratio.

Greater than

Less than

Equal to

None of these

Greater than

Less than

Equal to

None of these

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Engineering Mechanics

Engineering Mechanics In order to determine the effects of a force, acting on a body, we must know

Engineering Mechanics The velocity ratio of a single purchase crab winch can be increased by

Engineering Mechanics The centre of percussion is below the centre of gravity of the body and is at a distance equal to

Engineering Mechanics In ideal machines, mechanical advantage is __________ velocity ratio.

Engineering Mechanics
In order to determine the effects of a force, acting on a body, we must know

Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Engineering Mechanics
The centre of percussion is below the centre of gravity of the body and is at a distance equal to

Engineering Mechanics
In ideal machines, mechanical advantage is __________ velocity ratio.