Question

The centripetal force on a 0.82kg object on the end of a 2.0m massless string being swung in a horizontal circle is 4.0N. What is the tangential velocity of the object?

Answer 1

What is the relationship between 4N, r & V?

Answer 2

it makes an angle?:o

Answer 3

What?

Answer 4

@myphuong are you there?

Answer 5

The centripetal force = mv^2/r

Answer 6

\[v_T = \frac{ds}{dt}=\frac{dr \theta}{dt} \rightarrow r \frac{d \theta}{dt}=r \omega\]
http://www.dummies.com/how-to/content/calculating-tangential-velocity-on-a-curve.html

Answer 7

I'm late, but thanks guys (:

Answer 8

What else do you want?:

It says a horizontal circle
It gives you m and r and F
I gave you F=mv^2/r

so calculate V