If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

Strength of Materials
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

be all parallel

at least two of them must meet

meet in a point

All of the listed here

be all parallel

at least two of them must meet

meet in a point

All of the listed here

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Strength of Materials
The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

20 kg, + ve sense

10 kg, – ve sense

10 kg, + ve sense

20 kg, – ve sense

20 kg, + ve sense

10 kg, – ve sense

10 kg, + ve sense

20 kg, – ve sense

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Strength of Materials
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

metal will float in water

metal is twice as dense as unknown fluid

density of metal can’t be determined

metal is twice as dense as water

metal will float in water

metal is twice as dense as unknown fluid

density of metal can’t be determined

metal is twice as dense as water

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Strength of Materials
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of

limiting friction

friction

kinematic friction

repose

limiting friction

friction

kinematic friction

repose

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Strength of Materials
Coefficient of friction is the

the friction force acting when the body is just about to move

angle between normal reaction and the resultant of normal reaction and the limiting friction

the friction force acting when the body is in motion

ratio of limiting friction and normal reaction

the friction force acting when the body is just about to move

angle between normal reaction and the resultant of normal reaction and the limiting friction

the friction force acting when the body is in motion

ratio of limiting friction and normal reaction

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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 can be represented by a triangle, each side being proportional to force

Three forces acting at a point will be in equilibrium

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 can be represented by a triangle, each side being proportional to force

Three forces acting at a point will be in equilibrium

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 If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

Strength of Materials A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

Strength of Materials The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of

Strength of Materials Coefficient of friction is the

Strength of Materials According to Lami's theorem

Strength of Materials
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

Strength of Materials
The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be

Strength of Materials
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

Strength of Materials
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of

Strength of Materials
Coefficient of friction is the

Strength of Materials
According to Lami's theorem