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17 October, 22:29

José is pinned against the walls of the Rotor, a ride with a radius of 3.00 meters that spins so fast that the floor can be removed without the riders falling. When the ride accelerates to a speed of 17.0 m/s, his angular momentum is 3570 kg m2/s. What is his mass?

Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of significant digits

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  1. 18 October, 00:56
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    r = radius of the circle of the ride = 3.00 meters

    v = linear speed of the person during the ride = 17.0 m/s

    m = mass of the person in angular motion in the ride

    L = angular momentum of the person in the ride = 3570 kg m²/s

    Angular momentum is given as

    L = m v r

    inserting the values

    3570 kg m²/s = m (17 m/s) (3.00 m)

    m = 3570 kg m²/s / (51 m²/s)

    m = 7 kg

    hence the mass comes out to be 7 kg
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