I got a problem: let's say a car traveling around a circular race track of radius 340m. The lateral acceleration of the car is 1.2g. The roadway of the track is level, not banked. What is the mininum speed at which the car can travel on the track without rolling over? What is the minimum...
Hello,
I'm stumped about a relatively simple problem. Here it is in its exact form:
"You need a rectangular prism with its height at least several times greater than its length. Put this prism vertically on a table or any other horizontal plane. How does one determine the coefficient of...
physics help!
:confused: Ok, I have understood every problem we have done so far except this one,
You are wearing shoes that have a coefficient of friction on rock of 0.70. On how steep a rock slope could you stand without slipping?
So far i have gotten:
Fs=Fparallel=
mu*W*costheta...
Hi I'm new here, I hope someone can help me. I think I got the first half of the question, but I got stuck one the second part. Well here it goes,
A force of 40N accelerates a 5.0kg block at 6.0m^2 along a horizontal surface.
a.) How large is the friction force?
b.) What is the...
If the coefficient of friction is derived by f=un...
and u can be calculated as u=sinx/cosx or tanx;
Then why is there still friction on a level surface where x=0 and tanx also equals 0?
Im a beginner in physics. i just need help understanding :frown:
PLEASE help me out! coefficient of friction problem
Okay, I've never done this before and I sure hope there is somebody out there who can help me. I've tried answering this question EVERY way possible and cannot come up with the right answer.
In a circus performance, a monkey is strapped to...
The question is:
"Two blocks are accelerated across a horizontal frictionless surface as shown. Frictional forces keep the two blocks from sliding relative to each other, and the two move with the same acceleration. What is the magnitude of the horizontal component (frictional force) of the...
Finding Speed with Coefficient of Friction
You testify as an "expert witness" in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 6-27). You find that the slope of the hill is = 12.0°, that the cars...
The coefficients of friction between a 1kg mass and a surface are ms=.54 and mk=.46. Assuming the only other force acting on this block is that due to gravity, what is the force of friction (give magnitude and direction) on block:
-if the block is at rest and the surface is horizontal?
would...
I have a lab question that I'm confused about:
What can you say about acceleration if the:
a) static coefficient = kinetic coefficient = 0
b) static coefficient = kinetic coefficient does not equal 0
c) static coefficient is greater than kinetic coefficient
In my physics class, when we involved friction...the book kept making it a point of "why the coefficient of friction has no units"...the answer was always because it was a ratio.
Well.., if F_{friction}=umg then u=\frac{F_{friction}}{mg}, right? So why can't we say that the coefficient of...
Hey everyone, I could use some help with this problem.
What coefficient of friction is required to make a 25 degree banked curve safe at 90. km/h, if without friction it is safe at 60. km/h?
Any help would be appriciated.
help needed! ><
Someone please help me with this question!
(at least show me how to do it~!)
A car slams on its brakes and skids to a halt from 65km/h in 2.67s. Find the coefficient of friction between the car tires and the road.
Thanks in advance~! ^^