Why is the edge of the nails made sharp?
Edge of nails is made sharp(less area) so that the object experiences more pressure. This makes easier for a person to penetrate the wood with the force of a hammer.
What do you mean by pressure?
Pressure is the force acting on a unit area of a surface.
Mathematically, it is given by
=
How can we increase the pressure by exerting same force?
Mathematically, pressure is given by,
Pressure =
Pressure can be increased by decreasing the area of the surface on which force is to be applied.
Name the force due to which every object fall on earth?
The force due to which every object falls on earth is called the force of Gravity.
Force of gravity is an attractive force.