
#1
Mar812, 03:34 PM

P: 41

1. The problem statement, all variables and given/known data
A car of mass m is travelling along a circular hill of radius r with a constant speed v, write an expression for the force "on the car from the hill" when the car is at the top of the hill 2. Relevant equations F (weight) = mg F (centripetal) = mv^2 /r 3. The attempt at a solution I think the force on the car from the hill is the normal to the car which at the top of the hill seems to me to be mg. The actual answer is F = mg  (mv^2)/r, I cant seem to figure out how theyve come to this. 



#2
Mar812, 03:58 PM

Mentor
P: 40,873





#3
Mar812, 04:13 PM

P: 41

mg  normal = ma = m(v^2 /r) normal = mg =(mv^2)/r 


Register to reply 
Related Discussions  
Vertical circular motion in uniform circular motion  Introductory Physics Homework  3  
Uniform circular motion  plane in a circular arc  Introductory Physics Homework  1  
Circular Hill  Introductory Physics Homework  2  
Identifying the forces in a difficult circular / noncircular motion hybrid problem.  Introductory Physics Homework  5  
circular motion with car on hill  Introductory Physics Homework  0 