00:01
Hello today we'll be looking at the problem.
00:02
We have two different rods.
00:03
First of these is rod one rod one has abroad that is completely massless.
00:07
But the end of the rod there is a mass of 0.66 kg or on the contrary, rod to is uniformed attribution, where it's mass is equal to the mass and the end of rod one to the master out rod to is 0.6 kg.
00:20
They have identical links for l one is equal to l two, which is 0.75 m and both rotating for anglers.
00:27
Speed of 4.2 radiance a second were asked to find the kinetic energy where the kinetic energy is given by this equation here, where katie sensor kinetic energy and we have one half i were eyes the moment of another show and omega squared, which is the radio speed you'll see appear to solve.
00:43
This problem will break it into rod a rod be, since they have different one of the nurses or rod one and rod to.
00:49
So for are one sense for rod one.
00:54
We're trying to find the kinetic energy, so we want to find kinetic energy.
00:59
Did you do that? we just kinetic energy is equal to one half i omega squared.
01:09
In this case, we have a rod that is massless with a mass at the end of it and that motor nurses given by m l.
01:18
Squared throughout the whole question.
01:20
We have one half m l squared, omega squared.
01:23
We can plug in the values and we get one half 0.75 squared times the length with this this week...