A. coplanar
B. meet at one point ;
C. both A. and B. above
D. all be equal
E. something else
A. mechanical advantage is greater than velocity ratio
B. mechanical advantage is equal to velocity ratio
C. mechanical advantage is less than velocity ratio
D. mechanical advantage is unity
E. none of the above.
A. equal to the moment of the couple
B. constant
C. both of above are correct
D. both of above are wrong
E. none of the above
A. steel
B. copper
C. aluminium
D. cast iron
E. none of the above
A. kinetic friction
B. limiting friction
C. angle of repose
D. coefficient of friction
E. friction force
A. downwards at its upper end
B. upwards at its upper end
C. perpendicular to the wall at its upper end
D. zero at its upper end
E. none of the above
A. L/2
B. L/3
C. 3L/4
D. 2L/3
E. 3L/8