Question

21. Why do camels or elephants have broad feet?
22. A sharp, pin works better than a blunt pin. Explain
the reason.
23. Why is the bottom part of the foundation of a
building made wider ?​

Answer 1

Answer:

21.Camels have to walk on sand. Hence lesser pressure to sink less. The camels have board feet.

Elephants have board feet in proportion to their size. Because of their weight and size, elephants need to distribute the weight better.

Answer 2

Explanation:

21:-

camels and elephants have broad feet because camels have to walk on sand in desert the broad feet decreses the pressure and they can walk easily and the mass of elephant is very large due to which the pressure on foot is high the broad feet decreases the pressure,which help them to walk easily.

22:-

the sharp pin works better than blunt pin because the sharp pin have less area contanct

which increase the pressure and opposite in blunt pin.

23:-

the bottom part of the foundation of building made wider because the wider is the bottom part more area is in contanct as more area in contact less the pressure, which made building to stand for long period of time.