Q. 293.9( 11 Votes )

# An elephant weigh

Answer :

Weight of the elephant = 40000N

Area of 1 foot = 1000cm2 = 0.1m2

Weight of girl = 400N

Area of heel = 1cm2 = 1 × 10-⁴ m2

(a) Since, elephant has a larger weight therefore it exerts a larger force on the ground by 40000N - 400N = 39600N

(b) We know,

Pressure = Force/ Area

= 40000/ 0.1

= 400000N/m2

(c) We know,

Pressure= Force/ Area

= 400/ 10-⁴

=4000000N/m2

(d) The girl exerts a larger pressure on the ground.

(e) Ratio = (Pressure exerted by the girl)/ (Pressure exerted by the elephant)

= 4000000/ 400000

= 10/1

Hence, the pressure exerted by the girl is 10 times the pressure exerted by the elephant.

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