Question

Why is it easier to walk on soft sand if we have flat shoes rather than shoes with sharp heels

Answer 1

Flat shoes have larger surface area hence the pressure applied on the sand is less but heels have smaller surface area hence pressure applied is more, it sinks

Answer 2

Explanation:

Pressure

This is because of flat shoe has a greater area in contact with the soft sand. Due to which there is less pressure on the soft sand,  due to this the flat shoes do not sink much in Soft sand and it is easy to walk on it . On the other hand , a sharp heel has a small area in contact with the soft sand and so exerts a greater pressure on the soft sand. Due to this greater pressure,  the sharp heels tend  to sink   deep into soft sand making it difficult for the wearer to walk on soft sand.

The effect of force is increase in tools like knife , axes , nails and pins etc. by decreasing the area on which the force acts so that the pressure is more.  On the other hand the effect of force is decreased in laying the foundations  of buildings and dams by increasing the area on which the force acts so that the pressure is less.

For Example : The foundations of buildings and dams are laid on a larger area of the  ground so that the weight of the building or dam to be constructed produces less pressure on the ground and the buildings or dam may not sink into the ground .