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

Related Mcqs:

1. 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

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

3. The C.G. of a right circular solid cone of height h lies at the following distance from the base_____________?

   A. h/2
   B. J/3
   C. h/6
   D. h/4
   E. 3/i/5

4. The center of gravity of a triangle lies at the point of__________________?

   A. concurrence of the medians
   B. intersection of its altitudes
   C. intersection of bisector of angles
   D. intersection of diagonals
   E. all of the above

5. The center of gravity of a uniform lamina lies at_______________?

   A. the center of heavy portion
   B. the bottom surface
   C. the mid point of its axis
   D. all of the above
   E. none of the above

6. A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of__________________?

   A. r/2
   B. r/A
   C. r/%
   D. 0.134 r
   E. 3r/8

7. 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
   E. same as the force applied

8. 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
   E. 3L/8

9. 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
   E. 0.25 cm

10. Center of percussion is______________?

    A. the point of C.G.
    B. the point of metacentre
    C. the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
    D. point of suspension
    E. the point in a body about which it can rotate horizontally and oscillate under the influence of gravity