Homework Help: Physics

Posted by Don on Wednesday, November 7, 2012 at 10:17pm.

Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 16°. A car can travel around curve A without relying on friction at a speed of 18.5 m/s. At what speed can this car travel around curve B without relying on friction?

Physics - bobpursley, Wednesday, November 7, 2012 at 10:33pm
without friction.

then gravity down the clift is mgsinTheta
Centripetal force up the clift is m v^2/r*cosTHeta

setting them equal, mv^2 CosTheta/r= mgSinTheta or
tan Theta*r= v^2/g

so check the calcs there. If right, then v is proportional to sqrt ( *tanTheta)

so Vb=18.5 sqrt (tan16/tan11)
= 1.21*18.5

check thru all that

Answer this Question

Related Questions

physics - Two banked curves have the same radius. Curve A is banked at an angle ...
physics - Two banked curves have the same radius. Curve A is banked at 11.0 °...
physics - Two banked curves have the same radius. Curve A is banked at 11.0 °...
Physics - Two banked curves have the same radius. Curve A is banked at an angle ...
Physics - Two banked curves on a highway have the same radius. Curve A is banked...
Physics - A car, having a mass of 1.2 x 10^3kg rounds a curve which is banked at...
physics - a curve of radius 50 m is to be banked, so that the automobile may ...
physics - If a car takes a banked curve at less than the ideal speed, friction ...
PHYSICS - A circular curve of highway with radius 200m is designed for traffic ...
physics - The curves on a race track are banked to make it easier for cars to go...

For Further Reading

First Name:
School Subject:
Answer: