Question

A 90.0 kg man climbs hand over hand up a rope to a height of 9.47 m. How much potential energy does he have when he reaches the top?

Answer 1

Answer:

8352,54 J

Explanation:

PE= mgh

m=90kg

h=9.47

g= 9.8 m/s2

PE= 90*9.47*9.8

PE= 8252,54 J

Answer 2

The potential energy of man at the top is 8352.54 J

What is potential energy

Potential energy is defined as the energy possed by an object by virtue of his position. Mathematically, it can be expressed as:

Potential energy (PE) = mass (m) × acceleration due to gravity (g) × height (h)

PE = mgh

With the above formula, we can obtain the potential energy of the man

How to determine the potential energy

• Mass (m) = 90 Kg
• Height (h) = 9.47 m
• Acceleration due to gravity (g) = 9.8 m/s²

• Potential energy (PE) =?

PE = mgh

PE = 90 × 9.8 × 9.47

PE = 8352.54 J

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