Function model

[Jorge Andrade]

Here is the question

if the radius of the circle is 5 inches, and the frequency is 1500 revolutions per minute, create a function model for this situation, assuming you are starting from the 180 degree position on the unit circle.

I don't what it means to create a function model

 

[Steven G]

Suppose you put red paint on the wheel at the 180^o point. The function they are asking you to make will state where the red paint is at any point in time.

Try to make this function. At least make a table with time and the position of the red paint at that time.

 

[Jorge Andrade]

Suppose you put red paint on the wheel at the 180^o point. The function they are asking you to make will state where the red paint is at any point in time.

Try to make this function. At least make a table with time and the position of the red paint at that time.

How will it look like?

 

[Dr.Peterson]

Here is the question

if the radius of the circle is 5 inches, and the frequency is 1500 revolutions per minute, create a function model for this situation, assuming you are starting from the 180 degree position on the unit circle.

I don't what it means to create a function model

I think you need to quote more from the source. It must have said something before what you quoted, since it refers to "the circle" as if it was already mentioned. I'm guessing that something more has been said about what you are to model. To model a "situation", you have to know what aspect of the situation you are modeling! Jomo may be right, but we can't be sure.

 

[Steven G]

How will it look like?

A circle! The red dot is moving along a circle--one which has a radius of 5 inches and a frequency of 1500 revolutions per minute.

 

[Steven G]

Suppose the frequency was 1 revolution per minute. So where would the red mark be at t=0 sec, t=15 secs, t= 30 secs, t=45 secs, t=1 min, t= 1 min 15 secs, t=1 min 30 secs, ...?

 

[Jorge Andrade]

I think you need to quote more from the source. It must have said something before what you quoted, since it refers to "the circle" as if it was already mentioned. I'm guessing that something more has been said about what you are to model. To model a "situation", you have to know what aspect of the situation you are modeling! Jomo may be right, but we can't be sure.

It did It gave me a link too



The animation linked below shows how a traditional internal combustion engine works.

http://www.mdlp.org/members/courses/math_resources/images/piston.gif

A gasoline and air mixture is ignited by spark plugs, which forces the pistons to move up and down, rotating the crankshaft. The animation on the left shows a single piston moving up and down. The green connecting rod spins the crankshaft.