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

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.