Source / pinned edition
Friction
Source of package openstax.dynamics · OpenStax University Physics, ch. 6 Applications of Newton's Laws, module m58304
- work
- urn:openstax:clir:dynamics#M58304
- number
- OpenStax University Physics, ch. 6 Applications of Newton's Laws, module m58304
- kind
- urn:openstax:clir:dynamics#treatise
m58304/index.cnxml at commit d0ed34a (main, 2026-06-11)
- edition
- urn:openstax:clir:dynamics#M58304_MAIN
- language
- en
- officiality
- official
- materialisation
- PINNED_OFFICIAL_BYTES
- life cycle
- adopted: 2026-06-11
Publications
| URI | Type | documentHash | Retrieved |
|---|---|---|---|
| https://raw.githubusercontent.com/openstax/osbooks-university-physics-bundle/d0ed34a5851119a42e3d972dfc0ff49e4663977c/modules/m58304/index.cnxml | application/xml; charset=utf-8 | sha256:0bdd5583650b76a007b3b93ab5db42877fb8543999da5bc24d8f46f3ece90ad2 | 2026-09-06T00:00:00Z |
Fragments — 5
module/m58304#fs-id1165038031500 · defn · referenced by: 2
en · official · sha256:40827d0fc7eb72f73c6e1c4f87770f9befb8ecfb3c067c68fbd9bc398d336078
<definition id="fs-id1165038031500">
<term>friction</term>
<meaning id="fs-id1165037166731">force that opposes relative motion or attempts at motion between systems in contact</meaning>
</definition>Referencing norms: contact_of, normal_force
module/m58304#fs-id1165038337854 · defn · referenced by: 2
en · official · sha256:075df98889853ec968b3201deb405cf38ef809d0122529a8cf8e5385bdf8638a
<definition id="fs-id1165038337854">
<term>kinetic friction</term>
<meaning id="fs-id1165036846768">force that opposes the motion of two systems that are in contact and moving relative to each other</meaning>
</definition>Referencing norms: KineticFrictionIsCoefficientTimesNormal, kinetic_coefficient
module/m58304#fs-id1165038277974 · section
en · official · sha256:8cfd51c4dbf58e0d1825e184f6464649c4ca473bbd28d39449565e09f62b8e33
<note id="fs-id1165038277974">
<title>Magnitude of Kinetic Friction</title>
<para id="fs-id1165037149957">The magnitude of kinetic friction <m:math><m:mrow><m:msub><m:mi>f</m:mi><m:mtext>k</m:mtext></m:msub></m:mrow></m:math> is given by</para>
<equation id="fs-id1165038157609"><m:math><m:mrow><m:msub><m:mi>f</m:mi><m:mtext>k</m:mtext></m:msub><m:mo>=</m:mo><m:msub><m:mi>μ</m:mi><m:mtext>k</m:mtext></m:msub><m:mi>N</m:mi><m:mo>,</m:mo></m:mrow></m:math></equation>
<para id="fs-id1165038293964">where <m:math><m:mrow><m:msub><m:mi>μ</m:mi><m:mtext>k</m:mtext></m:msub></m:mrow></m:math> is the <term class="no-emphasis" id="term-00005">coefficient of kinetic friction</term>.</para>
</note>module/m58304#fs-id1165036846773 · defn · referenced by: 5
en · official · sha256:55982842a1eb38597eba2c5d624712876e9ac5517ab78ceb34e42bc4a555d9b0
<definition id="fs-id1165036846773">
<term>static friction</term>
<meaning id="fs-id1165038327277">force that opposes the motion of two systems that are in contact and are not moving relative to each other</meaning>
</definition>Referencing norms: AboveMaximumBreaksLoose, BelowMaximumStaysAtRest, MaximumStaticFrictionIsCoefficientTimesNormal, applied_parallel_force, static_coefficient
module/m58304#fs-id1165036855503 · section
en · official · sha256:7a274d03ebe3b077a4a3a05ddb0c82c994fa49a7551957d05ddf3b65c07e3b57
<note id="fs-id1165036855503">
<title>Magnitude of Static Friction</title>
<para id="fs-id1165037982016">The magnitude of static friction <m:math><m:mrow><m:msub><m:mi>f</m:mi><m:mtext>s</m:mtext></m:msub></m:mrow></m:math> is</para>
<equation id="fs-id1165037176402"><m:math><m:mrow><m:msub><m:mi>f</m:mi><m:mtext>s</m:mtext></m:msub><m:mo>≤</m:mo><m:msub><m:mi>μ</m:mi><m:mtext>s</m:mtext></m:msub><m:mi>N</m:mi><m:mo>,</m:mo></m:mrow></m:math></equation>
<para id="fs-id1165038241878">where <m:math><m:mrow><m:msub><m:mi>μ</m:mi><m:mtext>s</m:mtext></m:msub></m:mrow></m:math> is the <term class="no-emphasis" id="term-00004">coefficient of static friction</term> and <emphasis effect="italics">N</emphasis> is the magnitude of the normal force.</para>
</note>The hash beside the text is the sha256 of its exact bytes. It is the check that the text shown matches the one pinned in the package: a divergence fails the oracle’s static analysis.