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(Solution Download) You have a horizontal grindstone (a disk) that is 89 kg, has a0.38 m radius, is turning at 85 rpm (i

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You have a horizontal grindstone (a disk) that is 89

 

kg, has a0.38 m radius, is turning at 85 rpm (in

 

the positive direction), and you press a steel axe against the edge

 

with a force of 21 N in the radial direction.

 


 

Randomized Variablesm = 89

 

kg

 

r = 0.38 m

 

f = 85 rpm

 

F = 21 N

 

Part (a) Assuming that the kinetic coefficient

 

of friction between steel and stone is 0.20, calculate the angular

 

acceleration of the grindstone in rad/s2.

 

Part (b) What is the number of turns, N, that

 

the stone will make before coming to rest?

 

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This question was answered on: Oct 24, 2017

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