Estimate the change in gravitational potential energy when a person with mass 80 kg rise from bed to a standing position. Assuming that the center of mass of a person is elevated by approximately Δh=0.50m. Express your answer with the appropriate units.

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DeniceSandidge DeniceSandidge · Answer 1 · 2019-12-15T08:09:29+01:00

Answer:

change in gravitational potential energy Δ PE = 392 J

Explanation:

given data

mass of the person m = 80 kg

height of the centre of mass Δh = 0.50 m

to find out

change in gravitational potential energy

solution

we get here change in gravitational potential energy that is express here as

change in gravitational potential energy Δ PE = m × g × Δh .........1

put here value we get

change in gravitational potential energy Δ PE = m × g × Δh

change in gravitational potential energy Δ PE = 80 × 9.8 × 0.50

change in gravitational potential energy Δ PE = 392 J

adefioyelaoye adefioyelaoye · Answer 2 · 2022-03-03T12:23:36+01:00

The change in gravitational potential energy is 392 J

mass (m) = 80 kg

Height( Δh) = 0.50 m.

Gravitational potential energy is the energy which an object possesses because of its position in a gravitational field.

The formula for the change in gravitational potential energy is given as

ΔPE = m × g × Δh

Δ PE = 80 × 9.8 × 0.50

Δ PE = 392 J.

Therefore the change in gravitational potential energy is 392J

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