1. Centripetal Force

2. The Plot Thickens

3. Discussion Questions What are the reasons for plotting Fc = v ?
Is there a mathematical relationship? If so, what is it?
Is there a relation ship between Fc and mass?
If so, what is it?
Is there a relation ship between Fc and radius?

4. Centripetal Force
Fc = (mv2)/r

5. Re-fining the Equation
Displacement is circular so it is the circumference of the circle
•Velocity is displacement over time
•Acceleration is change in velocity over time

6. How does this relate to
Newton’s 2nd Law?

7. A Sample to Try
•A N car traveling at 50.0 km/hr rounds a curve of radius 200 m.
–Determine the centripetal acceleration of the car
–Determine the centripetal force –

8. Solution
The real answer is…
the centripetal acceleration

9. How fast can I do the curve?
What is the minimum coefficient of friction between the tires and the road so the car can round the curve safely?

10. Flat Curve

11. Banked Curve