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two blocks of masses m and 3m are placed on a frictionless, horizontal surface. a light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. a cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of v with arrow3m = 2.70 m/s.(e) if the spring was compressed by 5.00 cm, what is the spring constant of the spring?

two blocks of masses m and 3m are placed on a frictionless, horizontal surface. a light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. a cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of v with arrow3m = 2.70 m/s.(e) if the spring was compressed by 5.00 cm, what is the spring constant of the spring?

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two blocks of masses m and 3m are placed on a frictionless, horizontal surface. a light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. a cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of v with arrow3m = 2.70 m/s.(e) if the spring was compressed by 5.00 cm, what is the spring constant of the spring?

Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of va 3m = 1.65 m/s. 3m Before 3m wwwww After (a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.) -4.9 V m/s (b) Find the system's original elastic potential energy, taking m = 0.470 kg. Enter a number. is the elastic potential energy transferred after the string is cut? J (c) Is the original energy in the spring or in the cord? • in the spring in the cord (d) Is the momentum of the system conserved in the bursting-apart process? O Yes No (e) If the spring was compressed by 5.30 cm, what is the spring constant of the spring? N/m
Transcribed Image Text:Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of va 3m = 1.65 m/s. 3m Before 3m wwwww After (a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.) -4.9 V m/s (b) Find the system's original elastic potential energy, taking m = 0.470 kg. Enter a number. is the elastic potential energy transferred after the string is cut? J (c) Is the original energy in the spring or in the cord? • in the spring in the cord (d) Is the momentum of the system conserved in the bursting-apart process? O Yes No (e) If the spring was compressed by 5.30 cm, what is the spring constant of the spring? N/m
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