# Questions tagged [forces]

This tag is for the classical concept of forces, i.e. the quantities causing an acceleration of a body. It expands to the strong/electroweak force only insofar as they act comparable to ‘classical’ forces. Use the [particle-physics] tag for decay channels due to forces and [newtonian-mechanics] or one of the other subtopics of [classical-mechanics] for the dynamics of classical systems.

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### When I push a 24-karat gold bar with my finger, what subatomic physics are at play? [duplicate]

I chose a pure gold bar to eliminate the possibility of any chemical reactions occurring, the same question would apply to any everyday object like a wooden block or a marble. Or it could apply with ...
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### Momentum transfer to dielectric thin slit array grating

I know that when light impinges on a planar slit array grating (say, dielectric transmission grating, equidistant slits), the light diffracts and breaks into orders. If the light changes its momentum ...
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### Why do we consider the whole process, taking a single moment? Universality of the vector equation

I have considered a simple model for describing the elastic force vector of a spring. First, I chose a reference frame in an arbitrary way, then I drew the necessary vectors, we get a ratio that ...
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### Can We Have 0 Normal Between Any Two Bodies Just Touching Each Other

I am a bit confused... Here if we see x-axis forces they are getting detached from each other. So To Resist them The Normal Should Be Zero. I am not sure if I am applying the right logic or not but ...
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1 vote
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### Force on a dam with atmospheric pressure [closed]

For this problem, So they assume that the pressure at the top of the dam is zero instead of 1 atm. Therefore I wanted to try to take atmospheric pressure into account, Do you please know how to get ...
1 vote
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### Is hitting an obstacle half the size of my scooter wheel the same as hitting an obstacle half the size of my bike wheel?

I rode a scooter (the kind that you stand up and hold on to, with small wheels) and it didn't seem to handle bumps that would be minor if I was riding my bike. I was wondering if that is because ...
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1 vote