Calculate the greatest and least pressure exerted by a metal block of size 20cm- 8cm- 5cm and having mass 5kg- Take g-10m-s2-

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Question

Calculate the greatest and least pressure exerted by a metal block of size $20 c m \times 8 c m \times 5 c m$ and having mass $5 k g$ . Take $g = 10 m / s^{2}$ .

12500 P a; 3125 P a

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11500 P a; 3125 P a

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13500 P a; 5125 P a

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12500 P a; 5125 P a

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Solution

The correct option is A $12500 P a; 3125 P a$
pressure=force/area
pressure is inversely proportional to the area of cross-section.
so, maximum area corresponds to least pressure.
so, least pressure= (5x10) / (0.2 x 0.08)=3125 pa
and, greatest pressure= (5x10) / (0.08 x 0.05)= 12500 pa

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Calculate the greatest and least pressure exerted by a metal block of size 20cm×8cm×5cm and having mass 5kg. Take g=10m/s2.

The correct option is A 12500Pa;3125Papressure=force/areapressure is inversely proportional to the area of cross-section.so, maximum area corresponds to least pressure.so, least pressure= (5x10) / (0.2 x 0.08)=3125 paand, greatest pressure= (5x10) / (0.08 x 0.05)= 12500 pa

Calculate the greatest and least pressure exerted by a metal block of size $20 c m \times 8 c m \times 5 c m$ and having mass $5 k g$ . Take $g = 10 m / s^{2}$ .

The correct option is A $12500 P a; 3125 P a$
pressure=force/area
pressure is inversely proportional to the area of cross-section.
so, maximum area corresponds to least pressure.
so, least pressure= (5x10) / (0.2 x 0.08)=3125 pa
and, greatest pressure= (5x10) / (0.08 x 0.05)= 12500 pa