Tension in an object moving with circular motion

[Nat Reed]

Homework Statement

An object of mass 0.8kg is whirled round in a horizontal circle of radius 2m with a constant speed of 15ms-1. Calculate the tension in the string.

The Attempt at a Solution

So far I have calculated that the angular velocity is 7.5rads-1, the frequency is 1.19Hz and the time period is 0.84s, I'm just not sure where to go from here.

 

[billy_joule]

Where did the relevant equations section go?
You didn't need to find angular velocity, frequency or period.
There is a single equation you can use to find tension from the given variables.

 

[Chestermiller]

Homework Statement

An object of mass 0.8kg is whirled round in a horizontal circle of radius 2m with a constant speed of 15ms-1. Calculate the tension in the string.

The Attempt at a Solution

So far I have calculated that the angular velocity is 7.5rads-1, the frequency is 1.19Hz and the time period is 0.84s, I'm just not sure where to go from here.

Have you drawn a free body diagram? Do you know an equation for calculating the acceleration of the object?

 

[Kaura]

Looks like you have everything you need in terms of variables
See if there is an equation that can use these variables to calculate centripetal acceleration

 

[Ankush GK]

Draw the FBD and analyse the forces acting on the body.

Then frame an eqn. of horizontal and vertical eqbm.
U can get the required ans

 

[Nat Reed]

Thank you very much for the help everyone!

 

[darmzynyolarh]

Plz i nid formula to dat first question

 

[Chestermiller]

Plz i nid formula to dat first question

What are your thoughts on this so far? Can you say in words what is happening physically in this problem?