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1. |
A railway wagon A of mass 10000 kg collides with another identical wagon B as shown in the figure. If A is moving at 5 m/s and B is at rest at the time of collision, the maximum compression in the spring S with a spring constant of 2 MN/m will be |
A. | 20 cm |
B. | 30 cm |
C. | 35 cm |
D. | 45 cm |
Answer» D. 45 cm | |