Example energy question PDF

Preview

Summary

Energy questions with solution...

Description

The drawing shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a speed of 16.3 m/s via path 1. How fast is he moving on path 2 when he releases the rope at a height of 2.79 m above the water? Ignore the effects of air resistance.

Ei = 0 kinetic energy E1 = 0 potential energy

Using laws on conservation of energy – energy cannot be created or destroyed E2 = kinetic and potential energy...