I can't figure this one out: A mass moves in a circle with radius of 5.7 m due to a centripetal force of 487 N. The mass takes 1.1 seconds to complete a loop. The centripetal force is then reduced to a quarter of its original value. How long will it take to complete a loop with the same 5.7 m radius? Round to the nearest tenth.

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.