Respuesta :
The maximum static friction F is given by:
[tex]F = \mu N [/tex]
μ static friction coefficient
N normal force
The normal force N on a flat desk:
[tex]N = mg[/tex]
m mass
g gravitational acceleration = 9.81 m/s²
If the force exerted on the block is not larger then the maximum friction force, the block stays put.
[tex]F = \mu N [/tex]
μ static friction coefficient
N normal force
The normal force N on a flat desk:
[tex]N = mg[/tex]
m mass
g gravitational acceleration = 9.81 m/s²
If the force exerted on the block is not larger then the maximum friction force, the block stays put.
A 2.03 kg book is placed on a flat desk, with a coefficient of static friction between the book and the desk of 0.522 and a coefficient of kinetic friction of 0.283, requires a force of 10.4 N to start moving.
First, we have to calculate the Normal force (N), which, in a flat horizontal desk, has the same magnitude and opposite sense as the weight of the object (W). We can calculate its magnitude using the following expression.
[tex]|N| = |W| = m \times g = 2.03 kg \times \frac{9.81m}{s^{2} } = 19.9 N[/tex]
where,
- m: mass of the object
- g: Earth's gravity
To begin moving the book, we must overcome the highest static friction force (F), which can be calculated using the following expression.
[tex]F = \mu \times N = 0.522 \times 19.9 N = 10.4 N[/tex]
where,
- μ: coefficient of static friction
A 2.03 kg book is placed on a flat desk, with a coefficient of static friction between the book and the desk of 0.522 and a coefficient of kinetic friction of 0.283, requires a force of 10.4 N to start moving.
You can learn more about friction here: https://brainly.com/question/18754989