# The tension in a 2 m length of string that whirls a 1 kg mass at 4 m/s in a horizontal circle is calculated to be 8 N. How do you alculate the tension for the following case: twice the mass?

##### 1 Answer

Nov 12, 2015

#### Answer:

#### Explanation:

The tension in the string is balanced by the centripetal force.

This is given by

This is equal to

So you can see that, without doing any calculations, doubling