Could u Explain how to do problem 4.54 and 4.73(c) in RHK?
As regards problem 4-54, you need to convert the given information on rotation rate to a tangential velocity of the person on the ferris wheel. Then you can should be able to determine the centripetal acceleration -- and then you have to decide if the acceleration due to gravity is important in this problem. As for problem 4-73(c), the magnitiude of the velocity vector for the trip (in each direction) is squareroot(v^2 - u^2). Hence, the time in each direction is just L/squareroot(v^2 - u^2); from the definition of t_o in part (a), the final answer will follow.