momentum problem

[guru]

A 3kg puck revolves in a circle on a frictionless table at the end of a 50cm long string. The puck's angular momentum is 3kg (m^2/s). What is the tension in the string?

Need help in starting this problem

[Parth Dave]

Knowing the angular momentum what can you find? How does this relate to force or tension?

[guru]

Knowing the angular momentum what can you find? How does this relate to force or tension?

L= mrv
therefore
3kg*.25m*v = 3kgm^2/2
v=4m/s
F=(mv^2)/r
(3kg*16m/s)/(.25m) = 192N

is this right?