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\"Relative\" is an important word. In the figure below, block L of mass mL = 1.9

ID: 1960827 • Letter: #

Question

"Relative" is an important word. In the figure below, block L of mass mL = 1.90 kg and block R of mass mR = 0.500 kg are held in place with a compressed spring between them. When the blocks are released, the spring sends them sliding across a frictionless floor. (The spring has negligible mass and falls to the floor after the blocks leave it.)

(b) If, instead, the spring gives block L a release speed of 2.00 m/s relative to the velocity that the spring gives block R, how far does block R travel in the next 0.800 s?

Explanation / Answer

conservation of momentum

1.90(2) = .500(Vo)


Vo= 7.6 m/s


7.6 = m/s


m = 7.6(.8)

m = 6.08meters