A train is moving with velocity 20 m/sec. on this dust is falling at t – McqOptions

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1.	A train is moving with velocity 20 m/sec. on this dust is falling at the rate of 50 kg/minute. The extra force required to move this train with constant velocity will be [RPET 1999]
A.	16.66 N
B.	1000 N
C.	166.6 N
D.	1200 N
Answer» B. 1000 N

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