Question

hey help please will fan and medal
see attachment

Answer 1

@Photon336

Answer 2

@kohai

Answer 3

any idea where to start?

Answer 4

i have no idea of where i should start

Answer 5

lol alright give me a few minutes let me pull out my notes hah

Answer 6

ok

Answer 7

Ok well let's start by asking, what are the units of angular velocity?

Answer 8

you there?

Answer 9

i dont know

Answer 10

ok well in angular velocity it i the number of radians traveled/unit of time.
In this case, we have two answer choices (the middle two) that correspond with the units we should be expecting.

Answer 11

Now, angular velocity is solved through a number of proportions. It takes a lot of practice to understand the concept.

Answer 12

i was never taught this

Answer 13

Your goal is to get the end value having the units of rad/sec.
So let's look at how we should try to get that.

Answer 14

we are given a pendulum length- 6 feet. Now a pendulum can swing in a whole circle, so we can assume that the pendulum length is another form of saying a radius.
The arc length is 14.13 ft
the time is 3 seconds
We know that one of our units at the end has seconds at bottom so let's use 3 seconds last.

Answer 15

Let's set up proportions.
But first, some equivalent values to keep in mind.
2(pi)radians = 360 degrees = 1 revolution = 2(pi)(r)

Answer 16

\[\frac{ 14.13 ft }{ 3 \sec } \times \frac{ 2(\pi)radians }{ 2(\pi)(6)}\]

Answer 17

Does the above post make sense to you. 2(pi)(6) should have ft as the unit.
But if you see, ft cancel out and what is left should be radians/sec
I used the values given and set it up by proportions.

Answer 18

no