Question

Can someone tell me question 12 please

Answer 1

Answer:

Pressure calls force on unit area

Total area is 2.5cm × 0.5 cm = 1.25 cm2

unit is in cm so change in it m

$1.25 {cm}^{2} = 1.25 \times {10}^{ - 4} {m}^{2}$

Now pressure = force / area

$= \frac{60}{1.25 \times {10}^{ - 4} } = 4.8 \times {10}^{5} \: \frac{kg}{ {m}^{2} {s}^{2} } \: \: or \: pascal \: \:$

Answer 2

Explanation:

thrust = 60kgf

area of base = 2.5 × 0.5 cm = 1.25cm^2

pressure on base = thrust /area

= 60 kgf/1.25cm^2

= 48 kgf/cm^2

hope it helps you

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