# Pendulum problem: particularly the wording Rest position.

1. Nov 17, 2014

### hongiddong

3. The attempt at a solution
It seems as though the rest point is at the ends of the pendulum swing.
I know that the period of a pendulum is the time it takes the pendulum to make one
full back-and-forth swing.
I think this problem is wrong if the rest point means equilibrium point. Because then the Period would be .4 seconds.

2. Nov 17, 2014

### Staff: Mentor

The question and explanation are fine. The initial rest point of the pendulum is where the pendulum rested before it was struck by the bullet.

3. Nov 17, 2014

### hongiddong

Thank you GNeill!!!