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Results tagged with newtonian-mechanics
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user 57610
Newtonian mechanics discusses the movement of classical bodies under the influence of forces by applying Newton’s three laws. For more general concepts, use [classical-mechanics]. For Newton’s description of gravity, use [newtonian-gravity].
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The two-body problem - planets orbiting each other
I am taking a course in classical mechanics these days, which evolves the two-body problem. I need some clarity about the following questions, if possible.
Consider two stars orbiting around each oth …
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Throwing baseball at a car
For some odd reason, you decide to throw baseballs at a car of mass $M$, which
is free to move frictionlessly on the ground. You throw the balls at the back of
the car at speed $u$, and at a ma …
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A sailboat and wind, to find $v(t)$
Consider a sailboat of mass $m$ that lies on still water. A wind blows the sailboat with velocity $v_w$ perpendicular to the sailboat. If the boat has a sail with area $A$, and the air density is $ …
- 341
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A block is rotated with $ω=a\cdot t$ [closed]
A block of mass $m$ lies on a table. The coefficient of friction between the table and the mass is $μ$. The table is rotated around where the following relation holds: $$ω=a\cdot t$$ (where t is time) …
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Bungee jumping - find spring constant
A person of mass $m$ is attached to a spring that its loose length is $l_0$. He is standing on a bridge and jumps off it, so he travels down a distance $2 l_0$ when measured from the bridge up to the …
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The period of a mass-spring system including a pulley [closed]
A spring with spring constant $k$ is attached to a mass $m$ as illustrated in the following four set ups: Calculate the period of the motion for each of them.
In cases (1) and (2) the period i …
- 341
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Relative velocity between a ball hitting a rod [closed]
A ball of mass $m$ travelling with a velocity $v_0$ collides elastically, and perpendicularly with a rod at a distance $d$ from the center of the rod. The rod has a mass $M$ and lies on a frictionless …
- 341
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Pushing a crate on a friction floor [closed]
A man is pushing a crate at a constant velocity. there is a friction between the floor and the crate of $$\mu =0.41.$$ The pushing force is directed downward at an angle $\theta $ below the horizontal …
- 341
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The forces acting on 2 boxes [closed]
Consider the following figure:
The surface is not friction-less. When the force $F$ is applied on mass A: Is the force the mass A applies on mass B larger, smaller or equal then the Force that B e …
- 341
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Accelerated wedge [closed]
Consider the following figure, where a mass $m$ is placed on a wedge which is accelerated to the right ($\vec a$) which could be negative.
The coefficient of friction between the mass and the wedge i …
- 341