View Single Post
  #14   Report Post  
Posted to uk.d-i-y
Dave Plowman (News) Dave Plowman (News) is offline
external usenet poster
 
Posts: 43,017
Default The physics of cars - a question sequence.

In article ,
Vir Campestris wrote:
If a car is generating 400nM of torque at 2000RPM, what is the power
output of the engine?


Have you not Googled to find a calculator to do just this?

The formula I was taught many many years ago is for imperial units.

Easy to remember. Two pies 'n' tea.

So:-
2 x pi x RPM x torque(lb.ft)
---------------------------- = BHP
33,000

Result is approx 112 bhp.

--
*You're never too old to learn something stupid.
Dave Plowman London SW
To e-mail, change noise into sound.