m C > m H Assume there is no friction anywhere in the system. a) When the cart i
ID: 2178462 • Letter: M
Question
mC > mH
Assume there is no friction anywhere in the system.
a) When the cart is released, the force sensor measures the force exerted on the cart (the tension in the string pulling it), and the computer creates a graph of force (on the y-axis> vs. time (on the x-axis). Ideally: as the mass accelerates, what should this graph look like after the cart is released and before it hits the barrier?
b) You are supposed to start the system at rest. If the cart is initially moving with some vo, what would happen to T, the tension in the cord, and a, the acceleration of the cart?
c) Suppose the two masses are exchanged (so the new mC is the old mH, and visa versa; now mc < mH.). What would happen to T, the tension in the cord, and a, the acceleration of the cart?
d) Suppose the masses are returned to their original positions, and now there is significant friction between the cart and the track (but no friction anywhere else). What would happen to T, the tension in the cord, and a, the acceleration of the cart?
Explanation / Answer
a straight line parallel to the x-axis both T and a remain the same T remains the same, a increases T increases, a decreases
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