00:01
Okay, we want to use dimensional analysis to figure out the frequency of a pendulum, which is in cycles per second.
00:10
Depends on some or all of these properties, length of the pendulum, mass of the pendulum, bob, and the gravitational acceleration.
00:22
So let's just write the units here, cycles per second.
00:34
So this has dimensions of inverse time.
00:42
Length has units of meters, which has dimensions of length.
00:52
So this, on the left hand side, i'm doing the variable, and then i'm doing the units and then the dimensions.
01:02
So this should look familiar from dimensional analysis.
01:06
The mass has units of...
01:11
Of kilograms, which are dimensions, big m mass, and then gravity, which has units meters per second squared, and dimensions length times time to the minus two.
01:32
Okay, so basically what we want to say, we want to figure out an equation, we're saying the frequency is some function of length, mass and gravity, right? so we basically say inverse time is somehow related to some of these...