# An object with a mass of # 2 kg# is traveling in a circular path of a radius of #4 m#. If the object's angular velocity changes from # 1 Hz# to # 6 Hz# in # 3 s#, what torque was applied to the object?

##### 1 Answer

Apr 9, 2017

88N

#### Explanation:

first we need to find out the change in instantaneous velocity .

which is from 1 Hz to 6 Hz using formula

substituting values of 1 Hz as

we get the values for instantanious velocity for 2 cases of 1 Hz and

6 Hz as 6.28

we use the Newton's law of motion according to which

substituting

u=6.28

v=39.26

and T=3

We get the value for 'a' Acceleration as 10.99

For torque =

we substitute desired values and get 88 N