A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W tanα

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W (cosα + μsinα)

P = W tanα

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W (cosα + μsinα)

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Engineering Mechanics
The maximum efficiency of a screw jack is

(1 - sinφ)/(1 + sinφ)

(1 + sinφ)/(1 - sinφ)

(1 + tanφ)/(1 - tanφ)

(1 - tanφ)/(1 + tanφ)

(1 - sinφ)/(1 + sinφ)

(1 + sinφ)/(1 - sinφ)

(1 + tanφ)/(1 - tanφ)

(1 - tanφ)/(1 + tanφ)

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Engineering Mechanics
The unit of angular velocity is

Both (B) and (C)

m/min

rad/s

Revolutions/min

Both (B) and (C)

m/min

rad/s

Revolutions/min

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

2π/ω

2π × ω

π/ω

ω/2π

2π/ω

2π × ω

π/ω

ω/2π

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Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Momentum

Impulsive force

Weight

Mass

Momentum

Impulsive force

Weight

Mass

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Engineering Mechanics
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

Equal to

Greater than

None of these

Less than

Equal to

Greater than

None of these

Less than

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Engineering Mechanics

Engineering Mechanics A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics The maximum efficiency of a screw jack is

Engineering Mechanics The unit of angular velocity is

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

Engineering Mechanics The force, by which the body is attracted, towards the center of the earth, is called

Engineering Mechanics The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics
The maximum efficiency of a screw jack is

Engineering Mechanics
The unit of angular velocity is

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

Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Engineering Mechanics
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.