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Science · Advanced Physics
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In the figures at the right are shown two systems: a cart moving back and forth on a spring and a swinging pendulum. The graph below can be used to show the back and forth displacement of both systems as a function of time as long as the pendulum is kept at a small angle. Three instants of time are marked on the graph: A, B, and C. A. Specify the directions of the quantities below for the cart by choosing one of the following symbols: L (Left), R (Right), U (Up), D (Down), 0 (Zero), or S (Some other direction). acart(at B): -Select Fnet (at B): Select T B. Specify the directions of the quantities below for the pendulum by choosing one of the following symbols: L (Left), R (Right), U (Up), D (Down), 0 (Zero), or S (Some other direction). (at A): Eselec pendulum (at C): ESelect pendulum pendulum at B): Fnet. (at B): T pendulum C. If you knew m, could you calculate the length of the pendulum, L? If yes, explain how. If no, explain why not.
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