Question: A pendulum is 0.80 m long, and the bob has a mass of 1.0 kg. At the bottom of its swing, the bobs speed is

A pendulum is 0.80 m long, and the bob has a mass of 1.0 kg. At the bottom of its swing, the bob’s speed is 1.6 m/s. 

(a) What is the tension in the string at the bottom of the swing? 

(b) Explain why the tension is greater than the weight of the bob.

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