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Homework Statement
How much force is needed to swing a 4kg mass in a 3m radius horizontal circle so that each cycle takes exactly 2 seconds. Answer is 118N but the problem is how do I get to that...
Homework Equations
V=2Pir/T F=mv^2/r
The Attempt at a Solution
I tried using F=mv^/r one but I got nowhere close my teacher just solves problems without explaining at all and I have no clue how to solve it except find numbers.
Thank you for your time.