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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 kineticenergy 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 30mphshowing the forces and energy transfers involved.b) Write down the first law of thermodynamics for a system and identify terms that are notrelevant if the oil is taken as the system.c) How much heat transfer to the surroundings is required to return the oil to its originaltemperature after an impact by a 2500kg vehicle moving at 30mph?

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 kineticenergy 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 30mphshowing the forces and energy transfers involved.b) Write down the first law of thermodynamics for a system and identify terms that are notrelevant if the oil is taken as the system.c) How much heat transfer to the surroundings is required to return the oil to its originaltemperature after an impact by a 2500kg vehicle moving at 30mph?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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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?

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