Crazy Al has just acquired a 1967 Ford Mustang and wants to do a thorough checkup on it before he gives it a price. Since the hydraulic jack is broken, he has decided that in order to get a good look at the underside of the car, he must drive it up a jury-rigged ramp that rests against a large wooden crate.
What is known:
- The tires create a 1,000 N force perpendicular to the ramp. Assume that the box cannot move.
- The length of the ramp is 3 m. The distance from the start of the ramp, point A, to the front wheels is 2 m.
- The ramp is elevated at a 25° angle.
- The coefficient of static friction at point B is 0.2.