- #1

TheronSimon

- 37

- 0

## Homework Statement

so there's a 6 kg rock spinning in a circle with a string that can with stand a maximum tension of 75 and a radius of 1.5m

and i need to find the maximum speed before the string will break

## Homework Equations

Fnet=ma

a=4[itex]\pi[/itex]

^{2}R/T

^{2}

## The Attempt at a Solution

so Fnet =ma and a = 4[itex]\pi[/itex]

^{2}R/T

^{2}

so Fg = m*4[itex]\pi[/itex]

^{2}R/T

^{2}

so 6*9.8 = 6*4[itex]\pi[/itex]

^{2}1.5/T

^{2}

so 58.8 = 284.24 / T

^{2}

so T = 2.2

no would i be able to use this formula a=4[itex]\pi[/itex]

^{2}R/T

^{2}to find the acceleration and then use a= v

^{2}/R to get the speed?

Last edited: