Question

2. Solve the following.
“Nishita is digging a hole with a spade”. Explain why is it important that the edge of
the spade must be sharp​

Answer 1

Answer:

as to dig down she must apply pressure

and

pressure is nothing but force /area

she cannot increase the force

so she have to decrease the area to maximize the pressure so...... spade must be sharp

brainless kar do

Answer 2

Answer:

As we know that if area increases, pressure reduces for the same force and if the area decreases, the pressure increases for the same force. So as she has to dig down her she must apply some pressure. So if she increases the area then the pressure will be less and if she decreases the area then the pressure will be -more and bex work will become more easy and quick.

This is the correct answer with proper explanation