A sphere is moving around in the air. If the moment of inertia is 10 Kg m2 and a radius of 1m. What is its mass?

Question

4461 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-04-02T07:15:42

The mass is #15" kg"#

The moment of inertia of a solid sphere is:

#I=2/3mr^2#

The radius of the sphere is #r=1m#.

The moment of inertia of the sphere is #I=10kgm^2#

The mass of the sphere is:

#m=3/2*I*1/r^2=3/2*10*1/1=color(red)(15" kg"#

I hope that helps!