Question

Q 11) A thread was tilted 5° from vertical and let go. The ball’s movement time from the maximum

deflection point is?

1) 0.1s

2) 0.5s

3) 1s

4) 2s

Answer 1

$T=2\pi\sqrt{l/g}$

If $l=1\ m$ then $T=2\cdot3.14\cdot\sqrt{1/9.8}=2\ (s)$

The time of movement of the ball from the maximum deflection point to the equilibrium position is

$2/4=0.5\ (s)$

2) $0.5\ (s)$ . Answer