secure l 73418924 PHY 2048 Spring 2016.2 Exercise 8.47 Exercise 847 Part A Block

Question

secure l 73418924 PHY 2048 Spring 2016.2 Exercise 8.47 Exercise 847 Part A Blocks A (mass 400 kg) and B (mass 900 kg) move on a moving sutare Inaly block Bis at rest and block toward it 300 m/s. The blocks are equipped with idealspring bumpers. The collnionis head on, so all motion before and after the col gastraptine Let ta be the direction of the intal Find the maximum energy stored in the spring bumpers Express your answer with the appropriate units. Ansneers Give up Part B Find the velocity of block A when the energy stored in the spring bumpers is m Express your answer with the appropriate units. Value Units Incorrect: Try Again; 5 attempts remaining Part c v ocar of block when the energy stored the Incorrect. Try Again: 5 attempts remaining

Explanation / Answer

B.

when the energy stored is maximum bumber A and B move together with a velocity of center of mass

Vcm = (ma*Vai + mb*Vbi)/(ma + mb)

Vcm = (4*3 - 9*0)/(4 + 9)

Vcm = 0.923 m/sec

B.

Velocity of block A = 0.923 m/sec

C.

Velocity of block B = 0.923 m/sec

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