Question

Take two iron nails, one with pointed end and the other with blunt end. Try to nail them into wall. What did you observe?
Answer the following questions:
1. When did you have to apply more force: while using pointed nail or blunt nail?
2. What could be the reason for the above observation?

Answer 1

1. Blunt nail requires more force.
2.Pressure =Force\Area .So,
Force= Pressure × Area.
The blunt nail covers more area than the pointed nail.So, force is directly proportional to area.If area increases force also increases.