Question

physics

Asked by: larryj1

A pendulum is made by tying a 590  ball to a 48 -long string. The pendulum is pulled 23 to one side, then released.

What is the ball's speed at the lowest point of its trajectory?


To what angle does the pendulum swing on the other side?

thank you!

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Asked On
2008-10-15 at 08:52:05ID23817116
Topic

Math & Science

Participating Experts
3
Points
250
Comments
4

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Answers

 

by: d-glitchPosted on 2008-10-15 at 10:48:33ID: 22723680

This appears to homework.

We can't give you the answer.

But as a hint consider the conservation of energy.

How much potential energy do you get by displacing the pendulum?

 

by: aburrPosted on 2008-10-15 at 22:21:02ID: 22728247

You also need to tell us the units in which you are working.

 

by: deightonPosted on 2008-10-16 at 02:47:23ID: 22729180

When the ball is held at the top it has zero kinetic energy, and potential engergy given by mgh, where h is the vertical height above lowest point.

At the bottom of its swing all the potential energy has become kinetic energy, so you have to solve the formulka for kinetic enegy to get V.

20120131-EE-VQP-002

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