PLEASE HELP WITH THIS QUESTION!!!!
2 answers:
The combined weight of all the samples can simply be calculated by the arithmetic sum of all the individual weights of each sample.
The total <em><u>combined weight</u></em><em> </em>of all the samples is "114.22 lb".
Adding the individual weights of each sample we get:
Combined weight = Weight of sample 1 + Weight of sample 2 + Weight of sample 3
Combined Weight = 31.2 lb + 38.02 lb + 45 lb
<u>Combined Weight = 114.22 lb</u>
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The attached picture shows weight addition.
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Answer:
Angular momentum of the system is 4.8 kg m^2/s
Explanation:
As we know that the angular momentum of the system of masses is given as
here we have
now we also know that
now we have
Are you familiar with any basic calculus? If so, we can just look at this derivative and see what's happening with our units here..
Here it shows that acceleration is the derivative of velocity with respect to time. In other words, we can say that:
We can read that equation as: "acceleration is the change of velocity divided by the change in time (aka the time interval)."
If you're not familiar with calculus, we can use a simple equation of motion:
where:
vf = final velocity
vi = initial velocity
a = acceleration
t = observed time interval
We can rearrange this equation to find:
This is the same exact thing we wrote before!