1. A 1663.22 lbs. go-cart and driver rounds a curve. If the centripetal force on the go-cart and driver is 1000 lbs. The go-cart is traveling at 30mph. What is the radius of the curve?
2. A spring is stretched 5.0 cm by a 250 gram mass. What would the magnitude of the force have to be to stretch the spring 20 cm?