# A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 3.0 × 4.1 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 262 kg. Calculate the pressure in pascals exerted by the shelf footings on the surface.

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A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 3.0 × 4.1 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 262 kg. Calculate the pressure in pascals exerted by the shelf footings on the surface.

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Step 1

Given,

The total mass of the shalves and books = 262 kg

Dimension of the surface in contact with floor, D = 3.0 cm x 4.1 cm = 12.3 cm2

The number of legs of shalves that are in contact with floor, N = 4

Now, the force exerted by shalves is calculated by –

Step 2

Then, the total area is in contact with t...

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