A pendulum reaches a height of 0.3 m at the top of its swing. If the

bob has a mass of 5 kg, what is the potential energy at the top of its

swing?

Select one:

14.7)

7.35 J

0.45 J

1.5 J

Answer: A

Potential energy = 14.7 J

Explanation:

Given that the

Mass M = 5 kg

Height h = 0.3 m

Let us take acceleration due to gravity g = 9.81 m/s^2

Potential energy = mgh

Substitute all the parameters into the formula above

P. E = 5 * 9.81 * 0.3

P. E = 14.715 J

P. E = 14.7 J approximately

The correct option is therefore A