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1. A new type of energy absorber is being designed as a buffer at the end of track at a fairground. It consists of a pis
Posted: Mon May 16, 2022 12:09 am
by answerhappygod
- 1 A New Type Of Energy Absorber Is Being Designed As A Buffer At The End Of Track At A Fairground It Consists Of A Pis 1 (24.97 KiB) Viewed 63 times
1. A new type of energy absorber is being designed as a buffer at the end of track at a fairground. It consists of a piston with small holes that moves in a cylinder containing oil, so that the kinetic energy of impact is absorbed as heat by the oil. (a) Draw a sketch for the instant of impact by a vehicle of mass 2500kg moving at 30mph showing the forces and energy transfers involved. (b) Write down the first law of thermodynamics for a system and identify terms that are not relevant if the oil is taken as the system. (C) How much heat transfer to the surroundings is required to return the oil to its original temperature after an impact by a 2500kg vehicle moving at 30mph? [Answer: 225k))