Q8-MTE

8. A 420 kg car including passengers is initially at rest at the top of a 100-m long ramp inclined at 22°. When the cart reaches the bottom of the incline, it then moves around a loop whose radius is 8 m. There is a coefficient of friction 0f 0.2 along the incline only. a. How fast is the car moving at the bottom of the incline? b. How fast is the car moving at the top of the loop? c. How much work would have to be done to bring the car to a stop at the end of the track? d. How high should the incline be in order to reduce the speed to 5 m/s at the top of the loop?