Question

How much potintial energy is in a closed system where the height of the object is 2 m, and the mass is 10 kg?

Hint: PE=mgh

A. 10 J
B. 196J
C. 20 J
D. 200J

Answer 1

D. 196 J

Step-by-step explanation:

PE=mgh=10×9.8×2=196J

Answer 2

Answer: B. 196 J

• potential energy is calculated from the formula:

`{ \tt{p.e = mgh}}`

• m = 10 kg

• g = 9.81 m/s²

• h = 2m

→ Substitute:

`{ \tt{p.e = (10) * (2) * (9.81)}} \\ \\ → \: { \boxed{ \tt{potential \: energy = 196.2 \: \: joules}}}`