Approximately , assuming no energy loss and that .
Explanation:
If the gravitational field strength is constantly , lifting an object of mass by a height of would increase the gravitational potential energy () of that object by .
In this question, and . Assume that . Hence, the that this object would eventual gain would be:
.
Thus, this motor would need to do (at least) of work to lift this object up by . The power rating of this motor, , means that (assuming no energy loss) this motor could do of work every second.
The time it would take for this motor to do of work under these assumptions would be:
Explanation: The sun is one of earths primary energy sources. Without the sun, all animals, plants, humans would die. The sun's energy provides warmth for humans and plants and animals cannot grow without the sun.