Math Is Fun Forum

shabadoo1

Member

Registered: 2008-02-13

Posts: 1

Physics Help!

So the problem is stated like:

A small hockey puck executes uniform circular motion on a flat, horizontal frictionless ice. The force causing the centripetal acceleration of the puck's motion is provided by a string of length 170 cm, tied at one end of the puck and at the other end to a stake punded into the ice at the center of the puck's circular motion. If the puck has a speed of 2 m/s, what is the tension in the string? The puck has a mass of 0.9 kg.

I always have prob with tension in string problems and dont know how to get it started...

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Physics Help!

A mass m moving with speed v in a circle of radius r experiences a centripetal force of magnitude F, where

The is pretty much standard formula in questions of this kind.

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Physics Help!

Last edited by John E. Franklin (2008-02-13 16:13:35)

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