# Force exerted by one object on another?

by aishax
Tags: exerted, force, object
 P: 13 What force does the 4.0 kg object exert on the 10 kg object when the two are moving together? Ofcourse, I know I did not put the previous, required information in order to solve this question. I would like to know in general how to find the magnitude of force one object exerts on another in this type of situation. Any help is greatly appreciated :)
 P: 158 I assume they mean the force of gravity between them: F=(G(m1)(m2))/r^2 That will be the magnitude of the force between the two objects where 'G' is the gravitational constant (i believe 6.67E-11) and 'm1'&'m2' are the mass of the two objects and 'r' is the distance between them.
 P: 71 no I think he means contact forces. You sum the forces in each direction, then solving for the force that you wish to find. Draw a Force Diagram
P: 158

## Force exerted by one object on another?

 Quote by fizzynoob no I think he means contact forces. You sum the forces in each direction, then solving for the force that you wish to find. Draw a Force Diagram
Ah yes, that makes sense...i guess i assumed the two masses were some distance apart and moving towards each other, but instead they are touching and moving in unison. Good call.
 P: 60 zero. If the two are moving together there is force between them

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