Question

The bob (weight) at the end of a pendulum has a mass of 0.3 kilograms. The bob is pulled to position B and allowed to swing. It goes all the way to position C and swings back. The potential energy of the bob at position B is joules. If the maximum height of the bob is 0.45 meters when it swings back, joules of energy was transformed to thermal energy. Use g = 9.8 m/s2 and PE = m × g × h.

Answer 1

The gravitational potential energy (GPE),is the energy of position given by GPE=mgh

Where m=mass in kilogram, g=acceleration due to gravity, h=height in meters

GPE=0.3×9.8×0.45=1.323J

Answer 2

Answer:

0.147 j, 1.323 j

Explanation: