- #1
freswood
- 11
- 0
If I wanted to prove that whilst spinning a ball attached by a string in a circle, that:
F = 4 * pi^2 * r / T^2
Where F = force from tension
r = radius
T = period of one rotation
Ie. Proving that:
F is directly proportional to r
F is directly proportional to m
F is direction proportional to T^-2
How would I measure the force on the string? This is just school physics, so I can't do anything fancy. It'll probably just be someone spinning it in circles above them. The other variables are easy enough, but I need to be able to compare them to force. The only thing I thought of was using the formula F=ma, but the problem is the acceleration is constantly changing so can't be measured.
Thanks
F = 4 * pi^2 * r / T^2
Where F = force from tension
r = radius
T = period of one rotation
Ie. Proving that:
F is directly proportional to r
F is directly proportional to m
F is direction proportional to T^-2
How would I measure the force on the string? This is just school physics, so I can't do anything fancy. It'll probably just be someone spinning it in circles above them. The other variables are easy enough, but I need to be able to compare them to force. The only thing I thought of was using the formula F=ma, but the problem is the acceleration is constantly changing so can't be measured.
Thanks