angle theta, in terms of vehicle speed, mass, frontal area, drag coefficient, coefficient of rolling resistance, theta, and acceleration due to gravity. What is the power when the car is 1500kg and the hill is 15 degrees and the vehicle speed is 50mph.
2007-10-17 07:41:39 · 2 answers · asked by Kai K 1 in Science & Mathematics ➔ Engineering
Power is: Force*v, ergo
Power=(Fg+Fd+Fr)*v
where:
Fg is the force of resistance cause by gravity at angle
Fd is the force of drag
Fr is the force of rolling resistance
The various forces are:
Fg=g*sin(theta)*m
Fd= v^2*Cd*Frontal Area*fluild density/2
Fr= Crr*mg*cos(theta)
You should be able to finish from here. Good luck.
2007-10-17 09:05:46 · answer #1 · answered by Frst Grade Rocks! Ω 7 · 1⤊ 0⤋
what kind of a question is that?
2007-10-17 08:03:26 · answer #2 · answered by Anonymous · 0⤊ 1⤋