My son is practicing with his high school Science Olympiad team and came across this question:His source includes an answer, without explanation, that the coefficient of friction is $\mu\approx3.3$....

The question is not to talk about why kinetic friction is non-conservative, but rather if there is a way that I could show mathematically that the work done by kinetic friction is path-dependent?

There is a proverb "Water dripping day by day wears the hardest rock away". I could not easily find any info for not absolute and any discussion why, hence I ask here. Is static friction ...

There is a block $A$ on the table; the friction between the table and the block is not taken into account. A cube $B$ lies on the block, the coefficient of friction between the cube and the block is $...

A block is sliding to the right on a horizontal, stationary platform. For a very short time I press straight down on the block so the normal force—and therefore the friction—briefly becomes large. I ...

The correct answer B shows that velocity is constant for Scenario 1. This means that, along the incline, acceleration = 0 and F_net = 0. Then, kinetic friction (Fk) and the parallel component of ...

When a wheel rolls without slipping, friction acts backward at the point of contact with the ground. However, the torque due to that friction seems to be in the same direction as the wheel’s rotation....

Just north of the Ponpadi station on the Chennai-Renigunta railway line lies a breathtaking horseshoe curve:I am quite aware of the reason why horseshoe curves exist on railway lines, due to the ...

Consider Da Vinci's famous "boltless" bridge. (See image below*) Consider in particular an implementation with a significant 'arc', i.e. both ends start with a significant incline.How to ...

So, I took an exam yesterday and it asked, "Rubbing hands ___ internal energy" and it gave the options: Increases, Decreases, Does not affect.My though process was that the two hands exert ...

My question is as follows: Consider a crate, but it's acting on a force $P$. It doesn't move or tip over. We calculate the location of the normal force based on equilibrium conditions, and we ...

One of my old t-shirts recently got a tear. When I pull near the tear, it easily tears more and more apart. When I looked through 20x magnification, I don't see difference of thread in place where it ...

recently i had to go for wheel dynamic problem to choose a actuator and since my wheel is not steerable i choose 2d assumption. and i just faced a confusionin a rolling wheel if both surface and ...

I want to calculate the trajectory of a cricket ball using the TV camera, and be able to model the ball after it pitches. However, I am finding it difficult to accurately get the values of bounce ...

let us assume two cuboid with same material,same surface in contact and same weight but different orientation in space w.r.t contact surface (One is in contact vertically ,other horizontally). will ...