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The 3.0 k g object shown in the figure has a moment of inertia about the rotatio

ID: 2264404 • Letter: T

Question

The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 The 3.0kg object shown in the figure has a moment of inertia about the rotation axis of 8.7 times 10?2kg?m2 . The rotation axis is horizontal.(Figure 1) When released, what will be the object's initial angular acceleration?

Explanation / Answer

torque = I alpha

==> m g r cos25 = I alpha

==> alpha = m g r cos25/I

==> alpha = 3*9.8*0.17*25o/(8.7e-2)

==> alpha = 52 rad/s2