According to principle of moments

Strength of Materials
According to principle of moments

if a system of coplanar forces is in equilibrium, then their algebraic sum is zero

the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point

positive and negative couples can be balanced

if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

if a system of coplanar forces is in equilibrium, then their algebraic sum is zero

the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point

positive and negative couples can be balanced

if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

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

position or line of action

magnitude

All of the listed here

direction

position or line of action

magnitude

All of the listed here

direction

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Strength of Materials
If a number of forces act simultaneously on a particle, it is possible

To replace them by a single force through C.G.

To replace them by a couple

To replace them by a single force

Not a replace them by a single force

To replace them by a single force through C.G.

To replace them by a couple

To replace them by a single force

Not a replace them by a single force

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Strength of Materials
A pair of smith’s tongs is an example of the lever of

zeioth order

first order

third order

second order

zeioth order

first order

third order

second order

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

the floor is smooth, the wall is rough

the floor and wall both are rough sur-faces

the floor and wall both are smooth surfaces

the floor is rough, the wall is smooth

the floor is smooth, the wall is rough

the floor and wall both are rough sur-faces

the floor and wall both are smooth surfaces

the floor is rough, the wall is smooth

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Strength of Materials
According to Lami's theorem

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

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

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

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 upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they 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

Three forces acting at a point will be in equilibrium

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Strength of Materials

Strength of Materials According to principle of moments

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

Strength of Materials If a number of forces act simultaneously on a particle, it is possible

Strength of Materials A pair of smith’s tongs is an example of the lever of

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

Strength of Materials According to Lami's theorem

Strength of Materials
According to principle of moments

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

Strength of Materials
If a number of forces act simultaneously on a particle, it is possible

Strength of Materials
A pair of smith’s tongs is an example of the lever of

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

Strength of Materials
According to Lami's theorem