A captive James Bond is strapped to a table beneath a huge pendulum made of a 2.0-m-diameter uniform circular metal blade rigidly attached, at its top edge, to a 7.5-m-long, massless rod. The pendulum is set swinging with a 10 amplitude when its lower edge is 4.0 m above the prisoner, then the table slowly starts ascending at 1.0 mm/s. After 25 minutes, the pendulum's amplitude has decreased to 7.0°. Fortunately, the prisoner is freed with a mere 30 s to spare. Part A What was the speed of the lower edge of the blade as it passed over him for the last time? Express your answer with the appropriate units. HA 4 20 ? Value Submit Request Answer Units

Although California is known for earthquakes, it has large regions dotted with precariously balanced rocks that would be easily toppled by even a mild earthquake. Apparently no major earthquakes have occurred in those regions. If an earthquake were to put such a rock into sinusoidal oscillation (parallel to the ground) with a frequency of 2.2 Hz, an oscillation amplitude of 1.0 cm would cause the rock to topple.What would be the magnitude of the maximum acceleration of the oscillation, in terms of g?

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