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:

#16"N"#

Explanation:

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

This is given by #F=(mv^2)/r#

This is equal to #8"N"#.

So you can see that, without doing any calculations, doubling #m# must double the force and hence the tension to #16"N"#.