The coefficient of friction depends on________________?

Related Mcqs:

Which is the correct statement about law of polygon of forces ?

A. if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium B. if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are … Which is the correct statement about law of polygon of forces ?Read More...

Limiting force of friction is the__________________?

A. tangent of angle between normal-reaction and the resultant of normal reaction and limiting friction B. ratio of limiting friction and normal reaction C. the friction force acting when the body is just about to move D. the friction force acting when the body is in motion E. minimum force of friction...

The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to _________________?

A. Wtan(a + ) B. Wtan(a-) C. Wcos(a + ) D. Wsin(a + ) E. W (sin a + cos )....

Center of gravity of a solid cone lies on the axis at the height _____________________?

A. one-fourth of the total height above base B. one-third of the total height above base C. one-half of the total height above base D. three-eighth of the total height above the base E. none of the above...

The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be_________________?

A. r/2 B. 2r/3 C. r/A D. 3r/2 E. 3r/A...