# HELP mE physics?

A 3.06 kg mass attached to a light string

rotates on a horizontal, frictionless table. The

radius of the circle is 0.408 m, and the string

can support a mass of 16.4 kg before breaking.

The acceleration of gravity is 9.8 m/s

2

.

What maximum speed can the mass have

before the string breaks?

Answer in units of m/s.

### 1 Answer

Relevance

- ?Lv 74 weeks ago
What they probably meant is:

The string can support a tension force that is equal to the weight of a 16.4 kg mass on Earth.

So the maximum tension in the string if it is not to break is 16.4 * 9.81 N.

The tension provides the centripetal force necessary to keep the object going in a circle

(3.06 kg) (v^2) / r = F

Still have questions? Get answers by asking now.