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Results tagged with classical-mechanics
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user 144045
Classical mechanics discusses the behaviour of macroscopic bodies under the influence of forces (without necessarily specifying the origin of these forces). If it's possible, USE MORE SPECIFIC TAGS like [newtonian-mechanics], [lagrangian-formalism], and [hamiltonian-formalism].
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Reconciling classical mechanics with special relativity - energy lost as heat in an inelasti...
If a particle of rest mass $m_0$ travelling with a velocity $u$ collides with a stationary particle also of rest mass $m_0$ and then coalesces to form a new particle with invariant rest mass $M_0$ tra …
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Deriving an expression for the spacing of bumps on the road given that the car suspension is... [closed]
The suspension of a car may be considered to be an ideal spring under compression. When the driver, of mass $m_1$, steps into the car, of mass $m_2$, the vertical height of the car above the road d …
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What makes a collision 2D?
In my mechanics course, we've covered 1D and 2D collisions. However, what physical factors determine whether a collision will be 1 or 2 dimensional?
To make the question more precise, consider a mas …
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Struggling with a mechanics exam question regarding a circular frictionless slope [closed]
Source: https://www2.physics.ox.ac.uk/study-here/undergraduates/applications/physics-aptitude-test-pat/pat-past-papers
The answer is either A or B - different mark schemes have different answers (t …
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Why doesn't limiting friction contradict Newton's Third Law?
$R$ = Normal reaction force exerted on the particle by the ground
$Fr$ = Frictional contact force between the particle and the ground
All forces are measured in Newtons ($N$)
Using the angles w …
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Why is the net torque 0 when pushing a block across a table?
The way I see it, when I push a block across a table, taking care to push in line with its centre of mass or just below, the object should topple over because the friction should create a (clockwise …
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Why does the frictional centripetal force create a moment around a leaning bike?
Image source: https://geekswipe.net/science/physics/why-bike-lean-in-turn/
This diagram, along with several others I have seen, seem to use the centre of gravity as the pivot when calculating the m …
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Deriving an expression for the tangential velocity of a meteor orbiting the Earth? I have 2 ... [closed]
"A meteoroid of mass $m$ is on a circular Earth orbit of radius $R$ which is a few (> 2) times larger than the radius of the Earth $R_E$. Derive an expression for the meteoroid's speed. State the mean …
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What force caused the Earth to have a tangential velocity to its circular motion around the ...
The gravitational pull of the Sun acts as the centripetal force, accelerating the Earth towards it and causing the Earth to revolve in an orbit. However, there must have been an initial force to give …
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