Question

A pressure cooker is a covered pot sealed everywhere except for a small circular opening at the top. A small weight placed over this opening determines the pressure at which steam is released from the pot. Suppose that the radius of the opening is 0.450 mm and the weight is 0.848 N. Find the maximum pressure inside the pot.

Answer 1

Pressure,
`P=1.33* 10^6\ Pa`

Step-by-step explanation:

Given that,

Radius of the opening, r = 0.45 mm = 0.00045 m

Weight of the pot, W = F = 0.848 N

To find,

The maximum pressure inside the pot

Solution,

We know that pressure inside the pot is equal to the force acting per unit area. It is given by :

`P=(F)/(A)`

`P=(F)/(\pi r^2)`

`P=(0.848\ N)/(\pi (0.00045\ m)^2)`

`P=1.33* 10^6\ Pa`

So, the maximum pressure inside the pot is
`1.33* 10^6\ Pa`. Hence, this is the required solution.