A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will____________________?

Related Mcqs:

If two equal forces of magnitude P act at an angle 9°, their resultant will be________________?

A. P/2 cos 9/2 B. IP sin 9/2 C. 2P tan 9/2 D. IP cos 9/2 E. Psin 9/2...

The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?

A. same B. double C. half D. four times E. one fourth...

If rain is falling in the opposite direction of the movement of a pedestrain, he has to hold his umbrella___________________?

A. more inclined when moving B. less inclined when moving C. more inclined when standing D. less inclined when standing E. none of the above...

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 possible loading in various members of framed structures are_________________?

A. compression or tension B. buckling or shear C. shear or tension D. all of the above E. bending...