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`        An engine can pull 4 coaches at a maximum speed of 20 m/s. Mass of every the engine is twice the mass of every coach. Assuming resistive forces to be proportional to the weight, approximate maximum speeds of the engine when it pulls 12 and 6 coaches are.`
11 months ago

Arun
22613 Points
```							Dear student  A/Q   P=k 6mgv----------------(1)  P=k 14mgv1----------------(2)From eqn 1 and 2:- 6mgv=14mgv16v=14v1V1=6×20/14V1=8.5m/s  Also,6mgv=8mgv26v=8v2V2=6×20/8V2=15m/s RegardsArun
```
11 months ago
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• Test paper with Video Solution
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• NCERT Solutions
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• Previous Year Exam Questions