Loss in kinetic energy


by xto
Tags: energy, kinetic, loss
xto
xto is offline
#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
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#2
Aug14-06, 06:47 PM
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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
Saketh is offline
#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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