Question

A stone of mass 2 kg is attached to a string of length 1 meter. The string can withstand a maximum tension of 200 N. What is the maximum speed that stone can have during the whirling motion?

Answer 1

Given,

Mass of a stone = 2 kg,

length of a string = 1 m

Maximum tension = 200 N

The force acting on a stone in the whirling motion is centripetal force. Which is provided by tension of the string.

T_max = F_max = `(mV_max^2)/r`

200 = `v_max^2` = 100

`v_max^2` = 10 ms^-1