A spring of negligible mass is compressed between two masses on a frictionless t

Question

A spring of negligible mass is compressed between two masses on a frictionless table with sloping ramps at each end. The masses are released simultaneously. The masses have the same volume, but the density of M1 is greater than that of M2. Select the appropriate symbol for each statement: G (Greater than), L (Less than), or E (Equal to). (If the first two are 'greater than,' and the last four 'less than,' then enter GGLLLL).

   A) The speed of M1 is ... the speed of M2 once they both lose contact with the spring.
     B) The duration of the force exerted by the spring on M2 is ... the time the force acts on M1.
     C) The momentum of M2 is ... the momentum of M1 once they both lose contact with the spring.
     D) The kinetic energy of M1 is ... the kinetic energy of M2 once they both lose contact with the spring.
     E) The force exerted by the spring on M2 is ... the force it exerts on M1.
     F) The final height up the ramp reached by M2 is ... the height reached by M1.

Explanation / Answer

here both bodies have same volue, but M1 has more density.

so, M1 > M2

A) L

b) E

c) E

d) L

e) E

f) G

both bodies have equal magnitude f momentum.

KE = P^2/(2*m)

so, the body which has more mass will have less kinetic energy.

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