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