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.

Not be effected

Decrease

None of these

Increase

Not be effected

Decrease

None of these

Increase

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Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Output to the input

All of these

Work done by the machine to the work done on the machine

Mechanical advantage to the velocity ratio

Output to the input

All of these

Work done by the machine to the work done on the machine

Mechanical advantage to the velocity ratio

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Engineering Mechanics
A screw jack used for lifting the loads is

A non-reversible machine

A reversible machine

None of these

An ideal machine

A non-reversible machine

A reversible machine

None of these

An ideal machine

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Engineering Mechanics
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

Either ‘A’ or ‘B’

Meet

Do not meet

None of these

Either ‘A’ or ‘B’

Meet

Do not meet

None of these

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Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

Area of the triangle

None of these

Twice the area of the triangle

Half the area of the triangle

Area of the triangle

None of these

Twice the area of the triangle

Half the area of the triangle

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

ω/2π

π/ω

2π × ω

2π/ω

ω/2π

π/ω

2π × ω

2π/ω

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Engineering Mechanics

Engineering Mechanics The efficiency of a lifting machine is the ratio of

Engineering Mechanics A screw jack used for lifting the loads is

Engineering Mechanics Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

Engineering Mechanics Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

Engineering Mechanics The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

Engineering Mechanics
The efficiency of a lifting machine is the ratio of

Engineering Mechanics
A screw jack used for lifting the loads is

Engineering Mechanics
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)