Question

Two rods, 'A' and 'B', of the same weight and
equal length, have different thicknesses. A boy,
while playing with them on a beach, held them
vertically on the surface of sand as shown in the
figure. Which one of them will sink less? Explain.
​

Answer 1

Answer:

the one who's thickness is more

Explanation:

becouse in case of thinest [ less thick eod ] rod as it has a smaller area of contact, therefore the same force (weight of the rod) produces more pressure[so it will sink more] . In case the thickest rod the same force produces less pressure.

Answer 2

Answer:

The one with the less thickness

Explanation:

*Pressure is inversely proportional to Surface Area;

*This implies more the surface area, greater the pressure

                     lesser the surface area, lesser the pressure ;

*The rod of little thickness than the other ,since less more surface area sinks because pressure exerted by it is comparatively greater than other one.

Hope it helps you...