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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Physics (PH)
A car weighing 1350 kg is going down a hill. when it is 60 m vertically above the bottom of the hill, the driver sees red light of traffic crossing at the botto
A car weighing 1350 kg is going down a hill. When it is 60 m vertically above the bottom of the hill, the driver sees red light of traffic crossing at the bottom. His speed at the time brakes are applied is 20 ms. How much energy will be dissipated by the brakes if wind and other frictional effects are neglected. Take g = 9.80 m/s2
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Jeevesh magnani Best Answer
see the attachment for details
but the answer is given as 1323.5 kj
Hey Maitri, I have found the mistake made in the solution, it's in the final equation of Fb that is calculated I forgot to add mass to second term. Having done that, I still got answer as 1061.1kJ. but since this isn't the answer I request you to please report the answer as incorrect. Please pardon me for the mistake.