Question

A stone weighs 500 N.Calculate the pressure exerted by it, if it makes contact with a surface of area 25 cm2(square).

Answer 1

Explanation:

GIVEN:

Force applied on object = 500 N

Area of contact = 2.5 cm 2

So Pressure on object = Force applied / Area of contact;

But for answer to be in Pascals (Pa), area of contact should be in m2 ;

We know that 1 m = 100 cm;

So 1 m2 = 100 * 100 cm2 ;

So 1 cm2 = 1 / 10000 m2;

So 2.5 cm2 = 2.5 / 10000 m2;

So pressure applied on block = force applied / area of contact = 500/(2.5/10000) Pa

= 500 * 10000 / 2.5

= 5000 * 10000 / 25

= 200 * 10000 = 2000000 Pa or 2000 kilo Pascals (kPa) is the answer

HOPE you are SATISFIED

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Answer 2

Answer:

Explanation:

pressure= force/area

here, weight of stone= 500N

area= 25 sq.cm

=0.2500 sqm

So,

pressure = 500/0.2500

= 5000000/25

= 200000N/m2(sq)

Therefore the pressure exerted by the stone is 200000 N/m2(sq)