A 25 rifle bullet traveling 280 buries itself in a 3.8 pendulum hanging on a 3.0 long string, which makes the pendulum swing upward in an arc.

Question

Determine the vertical and horizontal components of the pendulum's displacement.

Answer 1

Using conservation of momentum, find the velocity of the block/bullet just after impact.
With that velocity, the block/bullet has an initial KEnergy, that will equal the PE at the highest point.

Sketch it out to figure the height the pendulum.