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Pressure = Force / Area

Authored by Mr Boyle

Physics

4th Grade

15 Questions

Used 35+ times

Pressure = Force / Area
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1.

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1 min • 5 pts

What would the pressure be when a 500 N force is exerted on an area of 0.75 m2?

Give your answer to 3 significant figures.

Answer explanation

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2.

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1 min • 5 pts

What would the pressure be when a 2250 N force is exerted on an area of 2.5 m2?

Answer explanation

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3.

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1 min • 5 pts

What would the pressure be when a 5000 N force is exerted on an area of 33.33 m2?

Answer explanation

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4.

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1 min • 5 pts

What would the pressure be when a 85 kg man stands on the ground and the surface area of each shoe is 0.325 m2?

Give your answer to 1 decimal place.

Answer explanation

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Find the area by doubling 0.325 to 0.65 as the man wears two shoes.

The question gives us his mass as 85 kg, but mass is a scalar quantity, not a force. Convert to a force using W = m x g to get his weight as 850 N.

p = F/A

p = 850 N / 0.65 m2

p = 1307.7 Pa (to 1dp)

5.

FILL IN THE BLANK QUESTION

1 min • 5 pts

What would the pressure be when a 4000 N force is exerted on an area of 0.02 m2?

Give your answer in kPa.

Answer explanation

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6.

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1 min • 5 pts

What would the force exerted on an object be when a pressure of 666.67 Pa is applied to an area of 0.75 m2?

Answer explanation

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7.

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1 min • 5 pts

What would the force exerted on an object be when a pressure of 0.9 kPa is applied to an area of 2.5 m2?

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