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6 Oct 2020
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 2.0 m/s.
(a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.)
m/s
(b) Find the system's original elastic potential energy, taking m = 0.35 kg.
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 2.0 m/s.
(a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.)
m/s
(b) Find the system's original elastic potential energy, taking m = 0.35 kg.
Uttam SaikiaLv10
11 Nov 2020
