A single bicycle wheel is spinning about its axle at an angular speed of 8.3 rad

Question

A single bicycle wheel is spinning about its axle at an angular speed of 8.3 rad/s. The wheel has a moment of inertia of 1.4 kg m2.

a.) What is the angular momentum of the wheel?
kg m2/s

b.) The axle of the wheel is rotated, or tilted, by 180

A single bicycle wheel is spinning about its axle at an angular speed of 8.3 rad/s. The wheel has a moment of inertia of 1.4 kg m2. What is the angular momentum of the wheel? The axle of the wheel is rotated, or tilted, by 180 degree to its final position. In other words, if the axle was vertical to begin with, it ended up again in a vertical position, but flipped by 180 degree. What is the change in angular momentum,, for the wheel when the axle is rotated by 180 degree ?

Explanation / Answer

A) angular momentum = Iw = 1.4 x 8.3 = 11.62 kg.m2/s

b) Lf - Li = Iwf - Iwi

direction of both will be same along z -axis .

and magnitude also same so change is zer0.

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