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Pressure 2

This document lists 8 calculation problems involving force, pressure, and area. The problems involve calculating the area of a child lying in bed given their weight and pressure, calculating the force on a knife given its pressure and area, and other similar physics calculation problems involving force, pressure, and area for objects like shoes, car tires, walls, and elephant feet.

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Rehan Ahmed Year 9
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33 views1 page

Pressure 2

This document lists 8 calculation problems involving force, pressure, and area. The problems involve calculating the area of a child lying in bed given their weight and pressure, calculating the force on a knife given its pressure and area, and other similar physics calculation problems involving force, pressure, and area for objects like shoes, car tires, walls, and elephant feet.

Uploaded by

Rehan Ahmed Year 9
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Show the working out for each of the following in your books:

1. A child with a weight of 504 N, exerts a pressure of 672 N/m 2 when lying on
the bed. Calculate the area of the child in cm2.
2. Calculate the force if the pressure of a knife with an area of 0.005 m2 is 8261
N/m2. answer to 2 decimal places.
3. Calculate the pressure of a shoe with an area of 0.04m2 and a force of 1423N.
4. Calculate the area of a car tire that exerts a pressure of 29000 N/m2 and a
force of 14500N.
5. Calculate the pressure if a car crashes into a wall with 25000N and with a
front area of 199cm2.
6. A woman standing in a pair of shoes has a weight of 475 N with an area of
0.003m2. Calculate the pressure she is exerting on the ground.
7. A lady standing on one stiletto heel of area 2 cm 2 and exerting a pressure of
351 N/cm2 on the floor. What is her weight?
8. An elephant weighs 2300 N and the pressure on the floor when standing on
one foot would be 12 778 N/m2. What is the area of its foot?

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