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.

Increase

None of these

Decrease

Not be effected

Increase

None of these

Decrease

Not be effected

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Engineering Mechanics
The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

y = x. tanα + (gx²/2u² cos²α)

y = (gx²/2u² cos²α) - x. tanα

y = (gx²/2u² cos²α) + x. tanα

y = x. tanα - (gx²/2u² cos²α)

y = x. tanα + (gx²/2u² cos²α)

y = (gx²/2u² cos²α) - x. tanα

y = (gx²/2u² cos²α) + x. tanα

y = x. tanα - (gx²/2u² cos²α)

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Engineering Mechanics
The static friction

Is independent of the area of contact, between the two surfaces

All of these

Always acts in a direction, opposite to that in which the body tends to move

Bears a constant ratio to the normal reaction between the two surfaces

Is independent of the area of contact, between the two surfaces

All of these

Always acts in a direction, opposite to that in which the body tends to move

Bears a constant ratio to the normal reaction between the two surfaces

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Coplanar non-concurrent forces

Coplanar concurrent forces

Unlike parallel forces

Like parallel forces

Coplanar non-concurrent forces

Coplanar concurrent forces

Unlike parallel forces

Like parallel forces

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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
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Downward at its upper end

Perpendicular to the wall at its upper end

Zero at its upper end

Upward at its upper end

Downward at its upper end

Perpendicular to the wall at its upper end

Zero at its upper end

Upward at its upper end

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Engineering Mechanics

Engineering Mechanics The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

Engineering Mechanics The static friction

Engineering Mechanics The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Engineering Mechanics Angle of friction is the

Engineering Mechanics A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Engineering Mechanics
The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

Engineering Mechanics
The static friction

Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Engineering Mechanics
Angle of friction is the

Engineering Mechanics
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act