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
Moment of inertia of a circular section about an axis perpendicular to the section is

πd4/64

πd3/16

πd4/32

πd3/32

πd4/64

πd3/16

πd4/32

πd3/32

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Engineering Mechanics
Angle of friction is the

The ratio of minimum friction force to friction force acting when the body is in motion

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

The ratio of minimum friction force to the friction force acting when the body is just about to move

Ratio of limiting friction and normal reaction

The ratio of minimum friction force to friction force acting when the body is in motion

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

The ratio of minimum friction force to the friction force acting when the body is just about to move

Ratio of limiting friction and normal reaction

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Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

2πN/180

πN/180

πN/60

2πN/60

2πN/180

πN/180

πN/60

2πN/60

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Engineering Mechanics
In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

P = W tan (α + φ)

P = W tan (φ - α)

P = W tan (α - φ)

P = W cos (α + φ)

P = W tan (α + φ)

P = W tan (φ - α)

P = W tan (α - φ)

P = W cos (α + φ)

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Engineering Mechanics
The law of motion involved in the recoil of gun is

Newton's second law of motion

None of these

Newton's first law of motion

Newton's third law of motion

Newton's second law of motion

None of these

Newton's first law of motion

Newton's third law of motion

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Engineering Mechanics

Engineering Mechanics Moment of inertia of a circular section about an axis perpendicular to the section is

Engineering Mechanics Angle of friction is the

Engineering Mechanics The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

Engineering Mechanics In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

Engineering Mechanics The law of motion involved in the recoil of gun is

Engineering Mechanics
Moment of inertia of a circular section about an axis perpendicular to the section is

Engineering Mechanics
Angle of friction is the

Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

Engineering Mechanics
In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

Engineering Mechanics
The law of motion involved in the recoil of gun is