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Hello sir

According to defination of friction--> The force that opposes the motion of an object is called friction but while interlocking there is no force between two surfaces then how any force opposes the motion because whlie friction acts thses is an interlocking then how any force can oppose

I hope you understood my question , sir i know thisis irritative to you but please try to explain.

I don't I'm clear on what you mean by "interlocking."  Of course there are forces between interlocking surfaces.  They're response forces that keep everything from moving. They come about in response to external forces pushing on the interlocking objects.


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Dr. Stephen O. Nelson


I can answer most basic physics questions, physics questions about science fiction and everyday observations of physics, etc. I'm also usually good for science fair advice (I'm the regional science fair director). I do not answer homework problems. I will occasionally point out where a homework solution went wrong, though. I'm usually good at explaining odd observations that seem counterintuitive, energy science, nuclear physics, nuclear astrophysics, and alternative theories of physics are my specialties.


I was a physics professor at the University of Texas of the Permian Basin, research in nuclear technology and nuclear astrophysics. My travelling science show saw over 20,000 students of all ages. I taught physics, nuclear chemistry, radiation safety, vacuum technology, and answer tons of questions as I tour schools encouraging students to consider careers in science. I moved on to a non-academic job with more research just recently.

Ph. D. from Duke University in physics, research in nuclear astrophysics reactions, gamma-ray astronomy technology, and advanced nuclear reactors.

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