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A force of 50 N is applied tangentially to the rim of a solid disk of...

A force of 50 N is applied tangentially to the rim of a solid disk of radius 0.18 m. The disk rotates about an axis through its center and perpendicular to its face with a constant angular acceleration of 115 rad/s2. Determine the mass of the disk.

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Answer #1

By torque equation,

torque = i alpha

50*0.18 = (0.5 mr^2)* alpha

9 = 0.5*(m*0.18^2)*115

m = 9/[0.5*0.18^2*115]

= 4.831 kg answer

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