Question

The data table below shows the distribution of the energies of a pendulum 0.60 s into its motion. What is the missing value?

A. 0.054 J
B. 0.654 J
C. 0.864 J
D. 0.972 J

Answer 1

C. 0.864 J

Step-by-step explanation:

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Answer 2

The total energy (also called mechanical energy) is the sum of the kinetic energy and potential energy:

`TE = KE + PE`
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is

`KE=TE-PE=0.918 J - 0.054 J =0.864 J`