Lasya is watering the plants in her graden with a pipe of area of cross- section 'A' and observed that the force of water from the pipe is 'F' .Find the change in area of caross section of the pipe to attain a pressure difference which is 1.5 times that of the intial.

Answer

`3/5 A_1`

Explanation

`P_1 = (F_1)/(A_1), P_2 = P_1+1.5P_1 = 2.5P_1`
`P_2 = 2.5P_1 = (2.5F_1)/(A_1) rArr P_2 = (F_1)/((A_1/2.5))`
`rArr A_1 - A_2 = (3A_1)/5`