Physics: An athlete had lifts a load with a mass of 150kg. 1) calculate the gravitational potential energy gained 2) if the mass of the load is increased to 200kg, calculate the gravitational potential energy gained by the load. 3) based on answers in 1&2, state the relationship between the mass of the load and the gravitational potential energy.

An athlete had lifts a load with a mass of 150kg.

HeyItsCookie9605

01.09.2021

Mass=150kg=mHeight=h=2mAcceleration due to gravity=g=10m/s^2

$\\ \sf\longmapsto P.E=mgh$

$\\ \sf\longmapsto P.E=150(2)(10)$

$\\ \sf\longmapsto P.E=3000J$

In 2nd case

Mass =m=200kgHeight=h=2mg=10m/s^2

$\\ \sf\longmapsto P.E=200(2)(10)$

$\\ \sf\longmapsto P.E=4000J$

We can observe that

If mass of body increases gravitational potential energy will increase.

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NobleWho

23.11.2020

Explanation:

Tension in the rope in upward direction = 30.2 N .

weight of bucket in downward direction = mg

net force in upward direction = 30.2 - mg

30.2 - 2.89 x 9.8

= 1.878 N

acceleration = net force / mass

= 1.878 / 2.89

= .65 m /s² .

= 65 cm /s²

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