Register to reply

The kissing circle

by Nal101
Tags: kissing circle
Share this thread:
Sep22-09, 05:48 PM
P: 16
1. The problem statement, all variables and given/known data
An object moving at a constant speed of 31 m/s is making a turn with a radius of curvature of 4 m (this is the radius of the "kissing circle"). The object's momentum has a magnitude of 87 kgm/s.
What is the magnitude of the rate of change of the momentum?
What is the magnitude of the net force?

2. Relevant equations
p = mv
[tex]\Delta[/tex]p = Fnet[tex]\Delta[/tex]t
dp/dt = magnitude of V / R (sry dont know how to put that in latex)

3. The attempt at a solution
Question 1: Velocity divided by radius? Using the 3rd equation, but the units dont check out.
I am lost
Question 2: How do I find t, and afterwards, the answer would be Fnet = 87 (change in momentum) * t (change in time)
Phys.Org News Partner Science news on
Hoverbike drone project for air transport takes off
Earlier Stone Age artifacts found in Northern Cape of South Africa
Study reveals new characteristics of complex oxide surfaces
Sep22-09, 05:57 PM
HW Helper
P: 6,207
the rate of change of momentum is just acceleration so you need to find the centripetal acceleration.

Register to reply

Related Discussions
Wave dispersion relation and parametric representation of a streched circle Calculus 0
Difference between Identical , Equal , Equivalent Calculus & Beyond Homework 9
Wisconsin crop circle formation was not made by hoaxers. General Discussion 13