1 answer

Suppose you exert a force of 180 N tangential to the outer edge of a 1.44-m...

Question:

sig.gif?tid=8O75-6C-7E-4A-961B-22885 Suppose you exert a force of 180 N tangential to the outer edge of a 1.44-m radius 73.5-kg grindstone (which is a solid disk).
Part (a) What is the torque τ, in newton meters, you are exerting on the grindstone, relative to the center of mass of the grindstone? sig.gif?tid=8O75-6C-7E-4A-961B-22885 Part (b) What is the angular acceleration of the grindstone α0, in radians per square second, assuming negligible friction? sig.gif?tid=8O75-6C-7E-4A-961B-22885
Part (c) What is the angular acceleration of the grindstone αf, in radians per square second, if there is an opposing frictional force of 22.5 N exerted 0.45 m from the axis? sig.gif?tid=8O75-6C-7E-4A-961B-22885
αf =
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We were unable to transcribe this image
We were unable to transcribe this image
We were unable to transcribe this image

Answers

I = 1 MR² 1 x 73.5*(1.44² 76-20 kg me ņu Fre 180x1.44 > 259.2 Nm 3.40 rad) sa I 259.2 76.20 Pner - 259.2 - (22.5x0.45) - 249.

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