Suppose that in-between the two carts is placed a spring balance. One end of the spring balance is tied to the Red cart, and the other to the Blue cart. The Red cart is held fixed, and the Blue cart is pulled with a force F newtons. What will be the force (i.e. weight) shown by the spring balance?
1) Suppose that in-between the two carts is placed a spring balance. One end of the spring balance is tied to the Red cart, and the other to the Blue cart. The Red cart is held fixed, and the Blue cart is pulled with a force F newtons. What will be the force (i.e. weight) shown by the spring balance?
2) Suppose that in-between the two carts is placed a spring balance. One end of the spring balance is tied to the Red cart, and the other to the Blue cart. The Red cart is pulled to the left, and the Blue cart is pulled to the right. The two forces are equal, so that the carts do not move. If the force applied on the Blue cart is F newtons, what will be the force (i.e. weight) shown by the spring balance?
3) Suppose that in the third law experiment, you attach the magnetic bumpers on both carts and place them on the track so that the two carts repel each other. Also suppose that the red cart's magnets are twice as strong as the blue cart's. Then as you hold one cart at fixed position, and push the other towards it, they will repel each other, and you note the forces on the two carts (i.e. their bumpers). What will happen to the forces?
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