Q1 a 260 wooden raft floats on a lake when an 80 man stands, Ask an Expert

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Q1. A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while.

What is the frequency of vibration?

Q2. New York's 300 m high Citicorp® Tower oscillates in the wind with a period of 6.80 s. Compute its frequency of vibration.

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