A gardener is watering plants at the rate 0.1 litre/sec using a pipe of cross - section `1 cm^(2)`. What additional force he has to exert if he desires to increase the rate of watering two times ?

Explanation

To solve the problem step by step, we need to determine the additional force the gardener has to exert to double the rate of watering the plants.

### Step 1: Understand the initial conditions
The gardener is watering plants at a rate of 0.1 liters per second using a pipe with a cross-sectional area of 1 cm².

### Step 2: Convert the rate of watering to cubic meters per second
Since 1 liter = 0.001 cubic meters, we convert the watering rate:
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