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11. A 30-kg box is 0.2 m long and 0.15 m wide. What pressure does it exert on the floor?

Sagot :

Answer:

P = 9800 Pa

Explanation:

Given that,

The mass of a box, m = 30 kg

Length of the box, l = 0.2 m

The width of a box, b = 0.15 m

We need to find the pressure it exerted on the floor. Pressure is equal to force acting per unit area. So,

[tex]P=\dfrac{F}{A}\\\\=\dfrac{mg}{lb}\\\\=\dfrac{30\times 9.8}{0.2\times 0.15}\\\\P=9800\ Pa[/tex]

So, 9800 Pa of pressure is exerted on the floor.

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