The Physics of Dance - University of Illinois High Energy Physics ...

I "
The Physics of Turns
indicates how hard it is to start something
spinning (just as mass is an indication of
how hard it is to start something moving).
! !
!
∆ L= τ∆t: if no torque is applied L must be
constant.
v ! v !
! "!
L = Iω ... if no " torque is applied:
• Decreasing I will increase ω !
"
• Increasing I will decrease ω !
22