Turntable Vectors
Vector rotation and angular momentum p2?
A plate radius of 25 cm and rotational inertia 0.0154 (kg * m ^ 2) is rotating freely 22.0 rpm about its central axis with a mouse than 19.5 g on the outside. The mouse walks from the edge to the center. Find (a) the rotation speed again and (b) the work done by the mouse.
As the external moment is absent, I2w2 = w2 = w2 = I1w1 I1w1/I2 (0.0154 0.000609375) * 2 (pi) * (22/60) / 0.0154 0.3812 * 2 = 2 (pi) = 2.395 w2 radians / second = frequency f2 = 0.3812 rev / sec = 22.872 rpm __________________ work = W = (2.1) I2w2 ^ 2 – (01/02) ^ 2 I1w1 ____________________________
Vectorvault Dee Jay
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