Question

A hammer exerts a force of 1.5 N on each of the two
nails A and B. The area of cross section of tip of nail
A is 2 mm2 while that of nail B is 6 mm2. Calculate
pressure on each nail in pascal.
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Answer 1

Pressure=Force/Area

For nail A

Force=1.5N

Area=2×1000=2000m2

Pressure=1.5/2000=0.00075Pascal

For nail B

Force=1.5N

Area=6×1000=6000m2

Pressure=1.5/6000=0.00025Pascal

Answer 2

Step-by-step explanation:

pressure=Force/area

for nail 1

P1=F/A1

$p = 1.5 \div 2 \times 10 {}^{ - 4}$

$p = 7.5 \times {10}^{3} pa$

for nail 2

$p = 1.5 \div 6 \times 10 {}^{ - 4 } \\ p = 2.5 \times {10}^{ 3}$pa