Question

A toy is spin in a circle with a centripetal force of 2.40 lb. The toy has a mass of 0.650 slug and is attached to a string 2.00 ft long. At what linear velocity (in ft/s) does it travel.

F = mv^2 / r
F * r = m v^2
(F * r) / m = v^2
v = sqrt (F * r) / m
v = sqrt (2.40 lb * 2.00 ft) / 0.650 slug / ft s
v = 2.71746 ft / s
v = 2.72 ft / s

Is this correct?

Answer 1

your answer is correct!