Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 11, Problem 1ASA
To determine
The three general empirical rules to describe friction.
Expert Solution & Answer
Answer to Problem 1ASA
The three general empirical rules to describe friction are given below.
Explanation of Solution
Friction refers to the force resisting the relative motion between contacting material surfaces, fluid layers and material elements sliding against each other.
The three general emipirical rules for frriction includes:
- Firctional force is independent of the surface area of contact.
- Frictional force is directly propotional to the load, the perpendicular component of the force pressing the surfaces together.
- Frictional force is independent of the sliding speed.
Conclusion:
Thus, the three general empirical rules to describe friction are given above.
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Students have asked these similar questions
Which statement about kinetic friction
and static friction is true?
(Some of the options mention a
horizontal force that friction opposes.
This means that a force is pulling
horizontally and friction is acting in the
opposite direction.)
Your answer:
The force of kinetic friction changes
if the speed of the object decreases.
The force of kinetic friction changes
if the horizontal force (or forces) it
opposes gets weaker.
The force of static friction changes if
the speed of the object decreases.
The force of static friction changes if
O the horizontal force (or forces) it
opposes gets weaker.
A 2.0kg block rests on a level surface. The coefficient of static friction is μs= 0.60, and the coefficient of kinetic friction is μs = 0.40 A horizontal force , F, is applied to the block. As F is increased, the block begins moving. describe how the force of friction varies as F increases from the moment the block is at rest to when it begins moving. Indicate how you could determine the force of friction at each value of F - before the block starts moving, at the point it starts moving, and after it is moving. please show all work.

A 12.4 kg block is pulled by a force of 26.8 N across a horizontal table. The coefficient of static friction is 0.4. The coefficient of kinetic
friction is 0.2. What is the static friction force experienced by the block? Do not include units in your answer (enter a numerical result
only).
Chapter 11 Solutions
Physics Laboratory Experiments
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