# Physics (Angular Momentum)

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A solid ball of radius 10cm and mas 8kg rolls in the y direction with a speed of 10 m/s At the instant that it is 3m from the origin along the x axis, what is the angular momentum (mag + direction) about its center of mass?

• Physics (Angular Momentum) -

Use the information on mass, radius and solidity to get the moment of intertia.
I = (2/5)M*R^2 = 0.0064 kg*m^2

The angular speed is
w = V/R = 10 m/s/0.1 m

The angular momentum about the center is I*w

Where it is does not matter

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