Q1. IT IS POSSIBLE TO ACCELERATE MOTORCYLCLE WITHOUT PUTTING HIGHER PETROL INPUT RATE INTO THE ENGINE. MOREOVER MOTORCYCLE IS DRIVEN ON A HORIZONTAL ROAD.
 
Q2. A SMALL COIN IS PLACED ON A REORD ROTATING AT 94/3 REV/MINUTE. THE COIN DOESNOT SLIP ON THE RECORD.WHERE DOES IT GET THE REQUIRED CENTRIPETAL FORCE FROM?

Asked by haroonrashidgkp | 19th Nov, 2017, 11:09: AM

Expert Answer:

 Increase in Acceleration leads to increase in force and increase in workdone/Energy. 
Hence increase in energy requires more input energy.
So it is not possible to accelerate without putting higher petrol input rate to engine
 
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Answered by  | 20th Nov, 2017, 01:30: PM