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 (cosα + μsinα)

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W tanα

P = W (cosα + μsinα)

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W tanα

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

-9.8 m/s2

+8.9 m/s2

+9.8 m/s2

-8.9 m/s2

-9.8 m/s2

+8.9 m/s2

+9.8 m/s2

-8.9 m/s2

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Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

Three-eighth of the total height above the base

One-half of the total height above base

One-fourth of the total height above base

One-third of the total height above base

Three-eighth of the total height above the base

One-half of the total height above base

One-fourth of the total height above base

One-third of the total height above base

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Engineering Mechanics
Which of the following statement is incorrect?

A force acting in the opposite direction to the motion of the body is called force of friction

The velocity ratio of a machine is the ratio of load lifted to the effort applied

A machine whose efficiency is 100% is known as an ideal machine

The ratio of the limiting friction to the normal reaction is called coefficient of friction

A force acting in the opposite direction to the motion of the body is called force of friction

The velocity ratio of a machine is the ratio of load lifted to the effort applied

A machine whose efficiency is 100% is known as an ideal machine

The ratio of the limiting friction to the normal reaction is called coefficient of friction

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

mr²

mr²/2

2mr²/3

2mr²/5

mr²

mr²/2

2mr²/3

2mr²/5

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

Third

None of these

First

Second

Third

None of these

First

Second

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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 If the body falls freely under gravity, then the gravitational acceleration is taken as

Engineering Mechanics Center of gravity of a thin hollow cone lies on the axis at a height of

Engineering Mechanics Which of the following statement is incorrect?

Engineering Mechanics The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

Engineering Mechanics If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

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
If the body falls freely under gravity, then the gravitational acceleration is taken as

Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

Engineering Mechanics
Which of the following statement is incorrect?

Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.