A cart of mass mA 3.7 kg is pushed forward by a horizontal force F. A block of mass mg = 1 kg is in turn pushed forward by the cart as show on the picture:
9.8 m/s2
3.7 kg
Mu =0.52
1 kg
If the cart and the block accelerate forward fast enough, the friction force between the
block and the cart would keep the block suspended above the floor without falling down. Given g 9.8 m/s² and the static friction
coefficient , = 0.52 between the block and the cart; the floor is horizontal and there is no
friction between the cart and the floor. Calculate the minimal force F on the cart