10.16 A set of bookshelves rests on a hard floor surface onfour legs, each having a cross-sectional dimension of3.0 x 4.1 cm in contact with the floor. The total mass ofthe shelves plus the books stacked on them is 262 kg. Cal-culate the pressure in pascals exerted by the shelf footingson the surface.6PFB

Question
Asked Nov 4, 2019
10.16 A set of bookshelves rests on a hard floor surface on
four legs, each having a cross-sectional dimension of
3.0 x 4.1 cm in contact with the floor. The total mass of
the shelves plus the books stacked on them is 262 kg. Cal-
culate the pressure in pascals exerted by the shelf footings
on the surface.
6PFB
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10.16 A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 3.0 x 4.1 cm in contact with the floor. The total mass of the shelves plus the books stacked on them is 262 kg. Cal- culate the pressure in pascals exerted by the shelf footings on the surface. 6PFB

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check_circleExpert Solution
Step 1

Force exerted by shelves is calculated by the formula,

 

F
m x a
- (262 kg)(9.8 m/s2) - 2.57x 10' kg.m/s2
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F m x a - (262 kg)(9.8 m/s2) - 2.57x 10' kg.m/s2

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Step 2

Dimension of the surface in contact with floor is 3.0×4.1 cm. number of legs of shelves that are ...

A = Nx (D
4 x 3.0 cm x 4.1 cm = 49.2 cm2
[Im2 = 10 cm2]
4.92 x 10
m2
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A = Nx (D 4 x 3.0 cm x 4.1 cm = 49.2 cm2 [Im2 = 10 cm2] 4.92 x 10 m2

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