This year for thanksgiving my family decided to cook our turkey on a spit. This was a great opportunity for me to apply my physics knowledge to the real world. I was interested in the amount of force that was required to rotate the turkey once from rest. Each rotation took 5 seconds.
- wf=wo+ αt
- 1.3rad/s= 0+ α5s
- α=0.26 rad/(s^2)
- Στ= αI
- Assuming a turkey's moment of inertia is equal to that of a solid cylinder
- Στ= (0.26rad/(s^2))(0.16kgm^2)
- τ=0.0416Nm (Since there is only one torque at work, this is the torque of the force applied by the person)
It only took .28N to rotate the turkey once! That's less than 0.07lbs of force.