Questions tagged [newtonian-mechanics]
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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Does A Pivot Exert A Force
On a frictionless horizontal table, a uniform stick is pivoted at its middle, and a ball collides elastically with one end, as shown in Fig. 8.10. During the collision, what are all the quantities ...
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Interesting Aerofoil Logical Fallacy
I am new to physics in general having just finished AP Mechanics and have limited knowledge of how fluid dynamics work. But just using forces and a simplified understanding of drag if have come to the ...
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Person holding two persons hanging over the edge and centre of mass inconsistency
Imagine a person holding the leg of the person in front that also holds the person in front of him. (over the edge like in MI4, assume centre of mass of second person with feet still on the floor is ...
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Buoyancy basics
I was solving this question and in the solution, they have applied a buoyant force exerted by kerosene. It makes sense by the basic definition of the buoyant force from Archimedes principle. However, ...
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Mechanics and constraint relation [closed]
Please solve this mechanics problem .
I couldn't derive the relation of extension of cords
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Rope sliding from frictionless surface inconsistency [closed]
Imagine a rope that has a mass lying on a frictionless table and one part of it is hanging over the edge. I know that if there is no friction it does not matter how much of the rope is hanging over ...
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Direction of friction of a block moving down a plane
Lets say that there is a block is on an incline, but given a horizontal push before being let go. Once the block is let go, friction will oppose the component of gravity acting along the ramp, $mg\sin(...
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Why doesn't Car-Parrinello molecular dynamics require an SCF calculation?
Reading the various terms of the Lagrangian in Car–Parrinello molecular dynamics, I'm trying to understand why there is not an SCF procedure hidden there.
In fact, it seems to me like the second term ...
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Would a homogeneous rod on a fulcrum oscillate or remain at rest after displacement?
If I take a homogeneous rod, put it on a fulcrum, push one side down in a controlled way and release very carefully won't the rod just stay at rest in that new position? ChatGPT says that it would ...
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A bird in a container [duplicate]
Suppose there is a bird in a sealed container, and the container is on a scale that measures its weight. The bird is flapping its wings to hover in the middle of the container. If the bird flaps its ...
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Find the height of water to be poured such that the centre of mass should be minimum height [closed]
Water is poured into a container of uniform mass distribution where its mass is 1kg,height of container is 100 cm and base area is 10cm2,density of water is 1gm/cm3 find the height of water to be ...
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Force due to pressure on a curved surface/wall [closed]
Most solutions that I found on the internet concerning the net force due to pressure on a curved wall were using free-body diagrams and I could not find any using a calculus approach
Assuming the ...
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Vertical Circular Motion ($u$ minimum)
In vertical circular motion, when we consider motion of a pendulum bob, while finding minimum velocity to complete VCM, we take Tension=0 at highest point and velocity at highest point is not equal to ...
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Granular Material Piles on an Inclined Plane
Consider a conical pile of sand (or any other granular material) that is placed on a flat surface. This conical pile has a given radius and height (r and h, respectively). What would the effect be on ...
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Conservation of linear vs. angular momentum in two similar cases
I have a question that eludes my understanding:
Imagine we have a bullet of mass $m$ and a rigid pendulum with a bob of mass $M$ hanging from a rigid rod of negligible mass hanging from the ceiling ...
