4. [-/1 Points] DETAILS SERPSE10 9.4.OP.014. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER As shown below, a bullet of mass m and speed v is fired at an initially stationary pendulum bob. The bullet goes through the bob, and exits with speed of -. The pendulum bob is attached to a rigid pole of length L and negligible mass. What is the minimum value of v such that the pendulum bob will barely swing through a complete vertical circle? (Use the following as necessary: m, L, 9, and M for the mass of the bob.) v/5 i V = Need Help? Read It 5. [-/2 Points] DETAILS SERPSE10 9.4.OP.015.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER (a) A 11.0 g wad of sticky clay is hurled horizontally at a 90 g wooden block initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides 7.50 m before coming to rest. If the coefficient of friction between block and surface is 0.650, what was the speed of the clay (in m/s) immediately before impact? m/s (b) What If? Could static friction prevent the block from moving after being struck by the wad of clay if the collision took place in a time interval At = 0.100 s? Explain your answer. O Yes, a slightly larger coefficient of static friction could reasonably prevent the block from moving. O No, the coefficient of static friction that would be required is unrealistically large. Need Help? Read it Master It 6. [-/1 Points] DETAILS SERPSE10 9.4.OP.016. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A blob of clay of mass m is thrown horizontally towards a block of mass M at rest on the floor. The clay adheres to the block, and the block moves a distance d before stopping. If the coefficient of friction between the block and the floor is , what was the speed of the clay just before the collision? (Use any variable or symbol stated above along with the following as necessary: g. Assume the clay never touches the floor.) Need Help? Read It