15.[1pt A spring of negligible mass is compressed between two masses on a fricti

Question

15.[1pt A spring of negligible mass is compressed between two masses on a frictionless table with sloping ramps at each end. (Note: the masses are not attached to the spring in any way, and so will fly apart after release.) The masses are release simultaneously. The mass Mi is less than that of M2 Select the appropriate symbol for each statement G G terr an L e than or E a c ie s are greate·than, and the last four less than, then enter GGLLLL). M1 M2 A) The duration of the force excrted by the spring on M2 is the time the force acts on M1 B) The magnitude of the force exerted by the spring on Ml is .. that it exerts on M2. C) The speed of Ml is the speed of M2 once they both lose contact with the spring. D) The final height up the ramp reached by M2 is .. the height reached by MI E) The kinetic energy of M1 is the kinetic energy of M2 once they both lose contact with the spring.

Explanation / Answer

A) E

B) E

C) G

D) L

E) G

F) E

because, According to Newtno's third law magnitude of force exerted by M1 and on M2 is equal to magnitude of force exerted by M2 on M1.

Both gain same magnitude of momentum but in opposite direction.

using, KE = P^2/(2*m)

so, KE1 > KE2

so, v1 > v2

so, h1 > h2

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