Physics/Math
posted by COFFEE .
A bicyclist travels in a circle of radius 35.0 m at a constant speed of 7.00 m/s. The bicyclerider mass is 72.0 kg.
Calculate the magnitude of the force of friction on the bicycle from the road.
Calculate the magnitude of the net force on the bicycle from the road.

An elevator weighing 2.00 x 105 N is supported by a steel cable. A freebody diagram of the elevator is shown below. What is the tension in the cable when the elevator is accelerated upward at a rate of 3.00 m/s2?