Posted by **clayton** on Tuesday, February 22, 2011 at 2:31am.

calculate the gravitational force between a student with mass (60kg) and her desk (5kg) if she is sitting .2m from her desk

- physics -
**drwls**, Tuesday, February 22, 2011 at 8:06am
Use Newton's universal law of gravity.

F = G M1*M2/R^2,

with

M1 = 60

M2 = 5

R = 0.2

Look up G if you have to. It must be in your book.

Actually, if she is sitting at the desk, there will be a much larger force between them because of the Earth below, pulling her down onto the desk. The real force between them would be her weight, M g.

It's a dumb/misleadiung question, if you ask me.

## Answer this Question

## Related Questions

- Physics - a student pushes on a desk with a force of 75 N causing it to begin ...
- physics - Imagine yourself seated on a wheeled desk chair at your desk. Consider...
- PHYSICS - Example 2: a) A desk has a mass of 68.75 kilograms. If the coefficient...
- Physics - The Earth has a mass of 5.97 x10^24 kg and the Moon has a mass of 7.36...
- Physics - In moving a 35.0 kg desk from one side of a classroom to the other, a ...
- Physics - In moving a 35.0 kg desk from one side of a classroom to the other, a ...
- physics - A desk weighing 80 N rests on the floor. The coefficient of friction ...
- English - 1. The dog sits under my desk. 2. The dog is sitting under my desk. (...
- physics - A student pushes on a desk with a horizontal force of 125 N and moves ...
- Physics - You set up a ramp on your desk at home. Marbles rolling down the ramp ...

More Related Questions