Circular Motion - Pendulum Question .HELP

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SUMMARY

The discussion focuses on calculating the speed and tension in a pendulum system. A pendulum with a length of 80.0 cm and a bob mass of 50.0 g is raised 20.0 cm and released. The calculated speed at the lowest position is 1.98 m/s, and the tension in the pendulum cord is 0.735 N. Participants seek guidance on the relevant formulas to solve these physics problems.

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Circular Motion - Pendulum Question...HELP!

1. A pendulum 80.0 cm long is pulled to the side, so that its bob is raised 20.0 cm from its lowest position, and is then released. As the 50.0 g bob moves through its lowest position, (a) what is its speed and (b) what is the tension in the pedulum cord?



2.(a) what is its speed and (b) what is the tension in the pedulum cord?



3. Ans. (a) 1.98 m/s (b) 0.735 N
I think it is a two part question but I am drawing a total blank and can't figure out how to do this problem.
PLEASE HELP!
Thanks
 
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Can somebody please point me in the right direction...If someone can just give me the formulas I should be able to figure it out from there.
 


Try and think about this a bit more... What unit are you learning right now? That should give a clue on what to do.
 
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