Physics need help!!!?

M

mathgeek

New member
A firm wants to determine the amount of frictional torque in their current line of grindstones, so they can redesign them to be more energy efficient. To do this, they ask you to test the best-selling model, which is basically a diskshaped grindstone of mass 1.0 kg and radius 8.80 cm which operates at 740 rev/min. When the power is shut off, you time the grindstone and find it takes 42.0 s for it to stop rotating.

(a) What is the angular acceleration of the grindstone? (Assume constant angular acceleration.)

____rad/s^2

(b) What is the frictional torque exerted on the grindstone?
____N.m
 
TIN TIN thats really mean
hey i know its hard
try google i just looked up some stuff and found the exat question
Good luck

and the person who answered 1st ur LOL shows how smart u are go read some picture books and leave the big questions to smart ppl
 
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