A 3000 kg cable car descends down a 200-m high hill. To control its speed, it has its own brakes as well as a 2000 kg counterweight on the other side of the hill. Assume that the rolling friction of both the cable car and the counterweight are negligible. First, calculate the braking force necessary for the car to descend at a constant speed. Then, calculate the car’s speed at the bottom of the hill if its brakes fail or are not engaged.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s