coffee is draining from a conical filter into a cylindrical coffeepot at the rate of 10 in3/min. (a) how fast is the level in the pot rising when the coffee in the cone is 5 in deep?

Respuesta :

The level in the pot rising when the coffee in the cone is 5 in deep is 0.35 in/min.

Here the variables are the height of the coffee in the filter hf , the radius of the top of the coffee in the filter rf , and the height of the coffee in the pot hp:

We allowed Vp to represent the volume of coffee in the pot. We are interested in the instant when

hf = 5 in and dVp/dt = 10 in³/min.

The question is dhp/dt =? when dVp/dt = 10 in³/min and hf = 5 in

We need to relate hp to the other variables. In the pot (idealized as a cylinder), we have the volume Vp as Vp = π(3)²hp = 9πhp in³(since the volume of a cylinder of radius r and height h is V = πr²h).

Differentiation of Vp with respect to time gives dVp/dt = 9πhp/dt or

dhp/dt = (1/9π).(dVp/dt)

When dVp/dt = 10 in³/min and hf = 5 in, we have

dhp/ dt = 1/9π(10)

= 10/9π in/min

dhp/ dt 0.35 in/min (notice that the answer here is independent of hf ).

Hence, the level in the pot rising when the coffee in the cone is 5 in deep is 0.35 in/min.

To know more about volume check the below link:

https://brainly.com/question/463363

#SPJ4