Question

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c. The foot of an elephant has an area of275 cm2. If the mass of the elephant is 2200 kg, find the pressure exerted by the elephant on the ground. ( g=10ms−2).

Answer 1

Answer:

200 kilopascals

Explanation:

Pressure = Force / Area

In given case force is equal to ¼ of weight of elephant (assuming weight of elephant is equally distributed to all the four foots). If "m" is the mass of elephant then,

Pressure = (mg/4) / A

= (2200 kg × 10 m/s²) / (4 × 275 cm²)

= (22000 kg m/s²) / (4 × 275 × 1/10000 m²)

= 20 × 10000 (kg m/s²) / m²

= 200 × 10³ Pascals

= 200 kilopascals