The static friction

Engineering Mechanics
The static friction

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

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

All of these

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

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

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

All of these

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

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Moment of inertia

Center of gravity

Center of mass

Center of percussion

Moment of inertia

Center of gravity

Center of mass

Center of percussion

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Engineering Mechanics
The moment of a force

Is the turning effect produced by a force, on the body, on which it acts

Is equal to twice the area of the triangle, whose base is the line representing the force and whose vertex is the point, about which the moment is taken

Is equal to the product of force acting on the body and the perpendicular distance of a point and the line of action of the force

All of these

Is the turning effect produced by a force, on the body, on which it acts

Is equal to twice the area of the triangle, whose base is the line representing the force and whose vertex is the point, about which the moment is taken

Is equal to the product of force acting on the body and the perpendicular distance of a point and the line of action of the force

All of these

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Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. cosα/g

t = 2u/g.sinα

t = 2u. sinα/g

t = 2u. tanα/g

t = 2u. cosα/g

t = 2u/g.sinα

t = 2u. sinα/g

t = 2u. tanα/g

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Engineering Mechanics
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

75 mm

50 mm

125 mm

87.5 mm

75 mm

50 mm

125 mm

87.5 mm

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Engineering Mechanics
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Towards the wall at its upper end

Downwards at its upper end

Away from the wall at its upper end

Upwards at its upper end

Towards the wall at its upper end

Downwards at its upper end

Away from the wall at its upper end

Upwards at its upper end

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Engineering Mechanics

Engineering Mechanics The static friction

Engineering Mechanics The point, through which the whole weight of the body acts, irrespective of its position, is known as

Engineering Mechanics The moment of a force

Engineering Mechanics The time of flight (t) of a projectile on a horizontal plane is given by

Engineering Mechanics The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

Engineering Mechanics On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Engineering Mechanics
The static friction

Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Engineering Mechanics
The moment of a force

Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

Engineering Mechanics
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is

Engineering Mechanics
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be