You have a grindstone (a disk) that is 92.0 kg, has a 0.490-m radius, and is turning at 83.0 rpm, and you press a steel axe against it with a radial force of 25.0 N.
(a)
Assuming the kinetic coefficient of friction between steel and stone is 0.50, calculate the angular acceleration (in rad/s2) of the grindstone. (Indicate the direction with the sign of your answer.)
(b)
How many turns (in rev) will the stone make before coming to rest?
1 answer
You have a grindstone (a disk) that is 75 kg, has a 0.36 m radius, and is turning at 100 rpm, and you press a steel axe against it with a radial force of 25 N.
1 answer