Solve for Parts A, B, and C? (20%) Problem 3: Suppose you exert a force of 185 N

Question

Solve for Parts A, B, and C?

(20%) Problem 3: Suppose you exert a force of 185 N tangential to the outer edge of a 1.645. m radius kg grindstone (which is a solid disk). A 33% Part (a) What is the torque t, in newton meters, you are exerting on the grindstone, relative to the center of mass of the grindstone? Grade Summary 0% Deductions Potential 100% Submissions sino coso tano 7 8 9 HOME Attempts remaining 5 10% per attempt) cotan0 asino acos0 4 5 6 detailed view 2 3 atan acotano sinh0 cosh0 tanh00 cotanh0 BACKSPACE CLEAR Degrees Radians Submit Hint I give up! Hints 0% deduction per hint. Hints remaining: 1 Feedback 0% deduction per feedback.

Explanation / Answer

F = 185 , r = 1.645 m = 44 kg

torque = F*r = 185 * 1.645 = 304.325 N.m

torque = I *alpha

304.325   = 44*1.645^2/2 * alpha

alpha = 5.11 rad/s^2

last part a

from what axis i took it from it 0.45 from the center

so

F*r - f*0.45 = I*alpha

185*1.645 - 17.5*0.45 = 44*1.645^2/2 * alpha

alpha = 4.97 rad/s^2

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