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Loss in kinetic energy

by xto
Tags: energy, kinetic, loss
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xto
#1
Aug14-06, 06:19 PM
P: 5
What formula should i use to calculate
the loss in kineti energy during braking and
the power dissipated as heating in the brake
do i just use ke=1/2mv^2 and work done =force x distance ?
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Andrew Mason
#2
Aug14-06, 06:47 PM
Sci Advisor
HW Helper
P: 6,679
Quote Quote by xto
What formula should i use to calculate
the loss in kineti energy during braking and
the power dissipated as heating in the brake
do i just use ke=1/2mv^2 and work done =force x distance ?
Yes. The braking force x stopping distance (assuming constant braking force) is equal to the loss of kinetic energy of the vehicle.

AM
Saketh
#3
Aug14-06, 07:02 PM
P: 262
Quote Quote by Andrew Mason
Yes. The braking force x stopping distance (assuming constant braking force) is equal to the loss of kinetic energy of the vehicle.
And if it's not constant, you can integrate the dot product of the force vector and the differential x-vector.

If you want the power of heat generation, you will need to find how much energy is being dissipated (i.e. how much kinetic energy is lost) per unit of time.


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