Which one of the following statements is not correct_________________?

A. The tangent of the angle of friction is equal to coefficient of friction
B. The angle of repose is equal to angle of friction
C. The tangent of the angle of repose is equal to coefficient of friction
D. The sine of the angle of repose is equal to coefficient to friction

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction__________________?

A. Along the plane
B. Horizontally
C. Vertically
D. At an angle equal to the angle of friction to the inclined plane

Angle oT friction is the___________________?

A. Angle between normal reaction and the resultant of normal reaction and the limiting friction
B. Ratio of limiting friction and normal reaction
C. The ratio of minimum friction force to the friction force acting when the body is just about to move
D. The ratio of minimum friction force to friction force acting when the body is in motion

If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be___________________?

A. Maximum
B. Minimum
C. Zero
D. Infinity

The centre 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

The center of percussion of the homogeneous rod of length L suspended at the top will be__________________?

A. L/2
B. L/3
C. 3l/4
D. 2l/3

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate___________________?

A. 0.5 cm
B. 1.0 cm
C. 1.5 cm
D. 2.5 cm

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve___________________?

A. Catenary
B. Parabola
C. Hyperbola
D. Elliptical

The units of moment of inertia of mass are_____________________?

A. Kg m2
B. M4
C. Kg/m2
D. Kg/m

Center of gravity of a thin hollow cone lies on the axis at a height of________________?

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