
#1
Sep2209, 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 kg·m/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 = F_{net}[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 F_{net} = 87 (change in momentum) * t (change in time) 



#2
Sep2209, 05:57 PM

HW Helper
P: 6,214

the rate of change of momentum is just acceleration so you need to find the centripetal acceleration.



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