A uniform disk of radius 0.551 m and unknown mass is constrained to rotate about a...
A uniform disk of radius 0.551 m and unknown mass is constrained to rotate about a perpendicular axis through its center. A ring with same mass as the disk\'s is attached around the disk\'s rim. A tangential force of 0.229 N applied at the rim causes an angular acceleration of 0.103 rad/s2. Find the mass of the disk.
Homework Answers
moment of inertia of the structure = mr^2/2 + mr^2
= 1.5mr^2
torque T= I*α
F.r = I.α
0.229 * r = 1.5mr^2 * 0.103
0.229 = 0.1545 * m*0.551^2
m = 4.88 kg
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