Question

If you leave the saddle when it is moving upward. The magnitude of down ward acceleration of the saddle is ----- when you lose contact with it:

• A. 6 $m{s}^{-2}$
• B. 7.2 $m{s}^{-2}$
• C. 9.8 $m{s}^{-2}$
• D. 12.2 $m{s}^{-2}$

Answer 1

The correct option is C 9.8 $m{s}^{-2}$

For a body in SHM the body has zero acceleration and maximum velocity at the mean position so the rider has a tendency to leave the saddle at the mean position due to the maximum velocity from where it undergoes decelerating force towards the mean poition.So the inertia makes the rider leave the saddle at the mean pos where acceleration is only due to gravity in the downward direction .i.e $g=9.8m/s^2$ .