Is there a formula for net torque analogous to net force?

[corala]

is there any formula of net torque? as we know, net force = momentum / time right? what about net torque?

 

[HallsofIvy]

Net force is change in momentum divided by time. Net torque is change in angular momentum divided by time.

 

[corala]

So, angular momentum = change in angular velocity x mass?

Please correct me if I'm wrong. Then, if net torque is applied, an object will experience a constant angular speed or an angular acceleration ?

 

[rcgldr]

So angular momentum = angular velocity x mass?

Angular momentum = angular velocity x angular inertia. Angular inertia depends on the distribution of mass within an object. Wiki articles:

http://en.wikipedia.org/wiki/Moment_of_inertia

http://en.wikipedia.org/wiki/List_of_moments_of_inertia

 

[corala]

Ok. I get it now. Thanks for your help. =)