- #1

bfr

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## Homework Statement

A 35kg boy is swinging on a rope 7 m long. He passes through the lowest position with a speed of 3 m/sec. What is the tension in the rope at that moment?

## Homework Equations

F=ma

F=(m*v^2)/R

v=(2pi*r)/T

## The Attempt at a Solution

F=(35*3^2)/7=45N

The correct answer is supposed to be 388 though.