Problem: Suppose that some time in the future we decide to tap the moons rotational energy for use on earth. In additional to the astronomical data in Appendix F in the textbook, you may need to know that the moon spins on its axis once every 27.3 days. Assume that the moon is uniform throughout.a) How much total energy could we get from the moons rotation?b) The world presently uses about 4.0 1020  J of energy per year. If in the future the world uses five times as much energy yearly, for how many years would the moons rotation provide us energy?c) In light of your answer, does this seem like a cost-effective energy source in which to invest?

🤓 Based on our data, we think this question is relevant for Professor Taylor's class at USP.

FREE Expert Solution
Problem Details

Suppose that some time in the future we decide to tap the moons rotational energy for use on earth. In additional to the astronomical data in Appendix F in the textbook, you may need to know that the moon spins on its axis once every 27.3 days. Assume that the moon is uniform throughout.
a) How much total energy could we get from the moons rotation?
b) The world presently uses about 4.0 1020  J of energy per year. If in the future the world uses five times as much energy yearly, for how many years would the moons rotation provide us energy?
c) In light of your answer, does this seem like a cost-effective energy source in which to invest?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Intro to Rotational Kinetic Energy concept. You can view video lessons to learn Intro to Rotational Kinetic Energy. Or if you need more Intro to Rotational Kinetic Energy practice, you can also practice Intro to Rotational Kinetic Energy practice problems.

How long does this problem take to solve?

Our expert Physics tutor, Julia took 4 minutes and 17 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Taylor's class at USP.