The magnitude of the force that must be applied to push the book across the desk is 3.97 N.
The given parameters;
- mass, m = 1.35 kg
- coefficient of friction, μ = 0.3
The acceleration of the book across the desk is calculated as follows;
a = μg
where;
- g is acceleration due to gravity
a = 0.3 x 9.8
a = 2.94 m/s²
The magnitude of the force that must be applied is calculated as follows;
F = ma
F = 1.35 x 2.94
F = 3.97 N
Thus, the magnitude of the force that must be applied to push the book across the desk is 3.97 N.
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