I have to make sample questions for class

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The discussion revolves around creating sample questions for a class, specifically focusing on physics concepts related to gravity and orbital mechanics. The first question, concerning the value of gravitational acceleration at a distance three times the Earth's radius, is noted to be overly complex. The second question, which asks for the Earth's orbital speed around the Sun, is considered appropriate and well-structured. The third question about the gravitational pull between the Earth and Moon is viewed as less engaging, with opinions suggesting it lacks depth. Overall, the feedback emphasizes clarity and relevance in question formulation.
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Can someone look these over and answer them so I can make sure my work is correct

1. The value of g at the Earth's surface is about 10 m/s2. What is its value at a distance from the Earth's center that is three times the Earth's radius?

2.Calculate the speed in meters per second at which the Earth revolves around the Sun. Assume the orbit is nearly circular, with radius r=1.5 10^11 m.

3. Somewhere between the Earth and the Moon, the gravitational pull exerted by these two bodies on a space pod would cancel. Is this location nearer the Earth or nearer the Moon?
A) Nearer the Earth.
B) Nearer the Moon.
C) At the half-way point.

Thanks for the help in advance.
 
Last edited:
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Welcome to PF.
FIRST ONE IS A BIT TOO LENGTHY.
SECOND ONE IS A GOOD ONE.
THIRD QUESTION DOES NOT IMPRESS ME MUCH.
 

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