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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