Quantum Quasar

A forum for students, or just those hoping to learn new things!

You are not connected. Please login or register

Negative masses and gravity (HYPOTHETICAL)

View previous topic View next topic Go down  Message [Page 1 of 1]

1 Negative masses and gravity (HYPOTHETICAL) on Mon Jul 17, 2017 6:55 pm


An object with negative mass accelerates in the opposite direction to the force applied to it, since F=ma.

So, which way will an object with negative mass fall under gravity?

Since F=GMm/r^2 (where m is the mass of the less massive object). If m is negative (which G also is) the force is positive. Positive forces repel and negative forces attract. Therefore the force would be acting away from the Earth, pushing the object upwards.

But the negative mass accelerates in the opposite direction to the force, so should still fall down.

This makes sense when you consider the fact that objects have the same acceleration due to gravity regardless of mass.

View user profile http://quantumquasar.forumotion.com

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum