Two short people are trying to get a 50 kg box moving across the floor. One is quite tall, and the other is quite short, so they can't use the same rope. The shorter person pulls on the rope so it is exactly horizontal to the floor, and uses a force of 170N. The taller person has to hold their rope at a 45 degree angle to the horizontal, and pulls with a force of 200N. What is the acceleration assuming the coefficient of friction is 0.3.