Question

Asked Nov 22, 2019

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A 0.29-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 4.5 m.

(a) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone−Earth system before the stone is released?

J

(b) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone−Earth system when it reaches the bottom of the well?

J

(c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well?

J

(b) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone−Earth system when it reaches the bottom of the well?

J

(c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well?

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Step 1

Consider a stone(mass *m*) is held at height *h* from the surface of the water well and depth of the well is denoted by *H*.

Step 2

(a) Take the reference at the surface of the well. Write the expression of potential energy and plug the suitable values to determine the stone-Earth system potential energy(*U _{1}*) when it is at height

Step 3

(b) Similarly, write the expression of potential energy and plug the suitable values to determine the stone-Earth system ...

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