Question

In this coming weekend’s performance, a circus stuntwoman (mass 45.0 ??) is going to be loaded into a spring-powered cannon. She will be launched straight up and will catch hold of a trapeze at the top of her flight 30.0 ? above the end of the barrel of the cannon. You’ve been asked to make sure the cannon is powerful enough to do this. You estimate that the average force exerted by the air on the stuntwoman will be 20.0 ? and that she accelerates for 2.00 ? while inside the cannon. a) Draw an energy bar chart for the situation that will help you answer part b. State the system of interest and any other choices you had to make. b) How much energy must be stored initially in the cannon’s spring in order to launch her high enough?

Answer 1