A 320-kg wooden raft floats on a lake. When a 75-kg manstands on the raft, it sinks 3.5 cm deeper into the water.When he steps off, the raft oscillates for a while, (a) What isthe frequency of oscillation? (b) What is the total energy ofoscillation (ignoring damping)?

*Centrifugal Force only present in noninertial reference frames* *Kinetic Friction implies “sliding” not rolling or walking, these involve static friction v 2 EQUATION μ s rg *only or pecific situations hen the static frict he centripetal acceleration* Circular Motion Problems Draw f ree body diagram What f orce is point oward the center F a v2 = ω r net c r Nonuniform Circular M otion Changing tangential velocity dω Angular acceleration α = dt Tangential cceleration at= rα v = rω