Which of these forces is always determined from a mathematical law? normal contact force universal gravity (i.e. that decreases as the inverse square of the separation) constant gravity at the surface of the earth kinetic friction tension in a string force from a spring static friction force

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Which of these forces is always determined from a mathematical law?
normal contact force
universal gravity (i.e. that decreases as the inverse square of the separation)
constant gravity at the surface of the earth
kinetic friction
tension in a string
force from a spring
static friction force
Transcribed Image Text:Which of these forces is always determined from a mathematical law? normal contact force universal gravity (i.e. that decreases as the inverse square of the separation) constant gravity at the surface of the earth kinetic friction tension in a string force from a spring static friction force
Expert Solution
Step 1

1. Normal contact force:

Determining the normal force is as a direct consequence of Newton's Third Law. 

2. Universal gravity:

Depends on Newton's Law of Universal Gravitation that states every particle in the cosmos attracts every other particle with a force directly proportional to the product of their masses and inversely proportional to the square of their distance.

3. Constant gravity at the surface of the earth.

Based on the principle of equivalence.

4. Kinetic friction:

Based on proportionality relations of kinetic friction.

5. Tension in a spring

Determining the tension force is as a direct consequence of Newton's Third Law. 

6. Force from a spring:

Based on Hooke's Law.

7. Static friction force:

Defined by the laws of friction.

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