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3 years ago

10

Two objects, with different masses, have a gravitational potential energy of 100 J each; they are released from rest and fall to

the ground. Both objects were released from the same height.
Is this statement True or False?

1 answer:

Fittoniya [83]3 years ago

3 0

The statement can't be true. Objects with different masses held at the same height don't have the same gravitational potential energy.

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3. What is the gravitational force between a 70 kg physics student and her 1 kg textbook, at a distance of 1 meter? (This number

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ANSWER

$\begin{equation*} 4.67*10^{-9}\text{ }N \end{equation*}$

EXPLANATION

Parameters given:

Mass of the student, M = 70 kg

Mass of the textbook, m = 1 kg

Distance, r = 1 m

To find the gravitational force acting between the student and the textbook, apply the formula for gravitational force:

$F=\frac{GMm}{r^2}$

where G = gravitational constant

Therefore, the gravitational force acting between the student and the textbook is:

$\begin{gathered} F=\frac{6.67430*10^{-11}*70*1}{1^2} \\ \\ F=4.67*10^{-9}\text{ }N \end{gathered}$

That is the answer.

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