Posted by Nicole on Friday, April 26, 2013 at 12:17pm.
What is the angular momentum (in kilogrammeter^2/second) of a 500.0 g ball rotating on the end of a string in a circle of radius 1.45 m at an angular speed of 1.50 rad/s?

physics  Elena, Friday, April 26, 2013 at 1:41pm
L=Iω=mR²ω =0.5•1.45²•1.5 = 0.29 kg•²/s

physics  Nii, Saturday, June 22, 2013 at 12:51am
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.49 m above the bottom of the chute and with an initial speed of 1.55 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a horizontal surface with coefficient of kinetic friction 0.261. How far from the bottom of the chute does the toy zebra come to rest? Take g = 9.81 m/s2.
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