Which of the following object exerts more pressure on the floor? (All object have the same mass).
Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
It can be expressed as:
P=FA
This implies lesser the area, greater is the pressure. So for same force, lesser the area more will be the pressure.
Among the four given options, the option A has a pointed vertex in contact with floor. So its area will be the least. Therefore, the object in option A will exert more pressure on the floor.