Register to reply

Max spped for a car to go around a curve track without skidding...confusing

by Brianne
Tags: curve, skiddingconfusing, spped, track
Share this thread:
Brianne
#1
Aug22-05, 10:39 AM
P: 3
here's my question,

a car of mass 1000kg moves along the corner of a level road having a radius of curvature 35.0m. If the frictional force between the tyres and the road is 4kN, the maximum speed of the car without skidding at the corner is
A. 4.0 m/s
B. 8.8 m/s
C. 11.8 m/s
D. 140.0 m/s

ok, i knew there's a formula for the max spped of a car go around the curve track without skidding is v=(rag/h)^1/2, but is it possible to find the height form centre of gravity of car in the above case? I've tried usin' v=(Fr/m)^1/2 which is derived from the centripetal force, F=(mv^2)/r, nonetheless, if we using v=(Fr/m)^1/2, is this could be the maximum spped of car instead of using v=(rag/h)^1/2????
Phys.Org News Partner Science news on Phys.org
FIXD tells car drivers via smartphone what is wrong
Team pioneers strategy for creating new materials
Team defines new biodiversity metric
Doc Al
#2
Aug22-05, 11:33 AM
Mentor
Doc Al's Avatar
P: 41,465
Quote Quote by Brianne
ok, i knew there's a formula for the max spped of a car go around the curve track without skidding is v=(rag/h)^1/2, but is it possible to find the height form centre of gravity of car in the above case?
I have no idea where you got that formula or what "height" it refers to.
I've tried usin' v=(Fr/m)^1/2 which is derived from the centripetal force, F=(mv^2)/r, nonetheless, if we using v=(Fr/m)^1/2,
That's the correct way to work this problem. The maximum friction force will determine the maximum speed.
mukundpa
#3
Aug22-05, 12:59 PM
HW Helper
P: 505
The difference between skidding and toppling (overturning) is creating the confusion.

If the car is toppling before skidding then we think of height on Center of mass of the car to calculate the torques.


Register to reply

Related Discussions
Velocity of a car skidding Introductory Physics Homework 7
Forces on a car skidding to a halt. Introductory Physics Homework 2
Skidding problem Introductory Physics Homework 4
Half the spped of light Special & General Relativity 3
Varying spped of light General Physics 4