A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

Strength of Materials
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

the floor is rough, the wall is smooth

the floor and wall both are smooth surfaces

the floor and wall both are rough sur-faces

the floor is smooth, the wall is rough

the floor is rough, the wall is smooth

the floor and wall both are smooth surfaces

the floor and wall both are rough sur-faces

the floor is smooth, the wall is rough

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Strength of Materials
If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be

Zero

Minimum

Maximum

Infinity

Zero

Minimum

Maximum

Infinity

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Strength of Materials
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

50

250

100

25

50

250

100

25

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Strength of Materials
Effect of a force on a body depends upon

direction

All of the listed here

magnitude

position or line of action

direction

All of the listed here

magnitude

position or line of action

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Strength of Materials
Pick up wrong statement about friction force for dry surfaces. Friction force is

independent of the area of contact surfaces

proportional to normal load between the surfaces

dependent on the materials of contact surface

proportional to velocity of sliding

independent of the area of contact surfaces

proportional to normal load between the surfaces

dependent on the materials of contact surface

proportional to velocity of sliding

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Strength of Materials
According to Lami's theorem

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

Three forces acting at a point can be represented by a triangle, each side being proportional to force

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

Three forces acting at a point will be in equilibrium

Three forces acting at a point can be represented by a triangle, each side being proportional to force

If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

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Strength of Materials

Strength of Materials A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

Strength of Materials If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be

Strength of Materials A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Strength of Materials Effect of a force on a body depends upon

Strength of Materials Pick up wrong statement about friction force for dry surfaces. Friction force is

Strength of Materials According to Lami's theorem

Strength of Materials
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

Strength of Materials
If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be

Strength of Materials
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Strength of Materials
Effect of a force on a body depends upon

Strength of Materials
Pick up wrong statement about friction force for dry surfaces. Friction force is

Strength of Materials
According to Lami's theorem