Tangent of angle of friction is equal to

Strength of Materials
Tangent of angle of friction is equal to

coefficient of friction

angle of repose

limiting friction

kinetic friction

coefficient of friction

angle of repose

limiting friction

kinetic friction

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Strength of Materials
According to Lami's theorem

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

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Strength of Materials
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

parabola

catenary

elliptical

hyperbola

parabola

catenary

elliptical

hyperbola

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Strength of Materials
In actual machines

mechanical advantage is less than velocity ratio

mechanical advantage is equal to velocity ratio

mechanical advantage is unity

mechanical advantage is greater than velocity ratio

mechanical advantage is less than velocity ratio

mechanical advantage is equal to velocity ratio

mechanical advantage is unity

mechanical advantage is greater than velocity ratio

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Strength of Materials
The effort required to lift a load W on a screw jack with helix angle a and angle of friction

Wcos(a + )

Wtan(a-<)>)

Wsin(a + <(>)

Wtan(a + <)>)

Wcos(a + )

Wtan(a-<)>)

Wsin(a + <(>)

Wtan(a + <)>)

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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 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

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

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Strength of Materials

Strength of Materials Tangent of angle of friction is equal to

Strength of Materials According to Lami's theorem

Strength of Materials A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

Strength of Materials In actual machines

Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction

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

Strength of Materials
Tangent of angle of friction is equal to

Strength of Materials
According to Lami's theorem

Strength of Materials
A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

Strength of Materials
In actual machines

Strength of Materials
The effort required to lift a load W on a screw jack with helix angle a and angle of friction

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