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(2) (Total 6 marks) 6 Karen wants to pump up her car tyre. Her pump has a piston with an area of 7 cm^2 175 N area = 7 cm^2 Karen pushes the handle down with a force of 175 N. (a) What pressure does she
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(2)

(Total 6 marks)
6
Karen wants to pump up her car tyre.
Her pump has a piston with an area of 7 cm^2
175 N
area = 7 cm^2
Karen pushes the handle down with a force of 175 N.
(a)
What pressure does she exert on the air in the pump?

User Schglurps
by
4.8k points

1 Answer

2 votes

Answer:

250000Pa

Step-by-step explanation:

Given parameters:

Force applied = 175N

Area = 7cm²

Unknown:

Pressure exerted by the air in the pump = ?

Solution:

Pressure is the force per unit area acting on a body;

Pressure =
(force )/(area)

Area = 7cm² ;

10000cm² = 1m²

7cm² is 7 x 10⁻⁴m²

Pressure =
(175)/(0.0007) = 250000Pa

User Wally Hartshorn
by
4.2k points
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