Coefficient of Static Friction (inclined)

AI Thread Summary
The discussion revolves around calculating the coefficient of static friction for a physics lab experiment involving a wooden block on an inclined board. The initial formula provided, µs = x/y, yielded an implausibly high value, prompting a reevaluation. Upon correcting the formula to µs = y/x, the calculated coefficient of static friction was found to be 0.28. Participants confirmed that the revised equation was accurate for determining static friction. The conversation highlights the importance of using the correct formula in physics experiments.
Gray14
Messages
2
Reaction score
0
Hi. During the completion of a physics lab i came across a problem. The lab consisted of putting a wooden block (0.10kg) at the en of a wooded board (1.84m), then lifting the wooden block side up slowly, so that when the block began to slide, we could record the hight. The problem is finding the coefficient of static friction. The formula provided by the teacher was µs = x/y. Is this the correct formula? After trying it, the number came out to be 3 point something, much too large i supose, but when i divided the y by the x it came out to be 2.7. Am i just doing something wrong, or is the incorrect equation given? Thanks.

ms = 0.10kg
lboard = 1.84m
x = 1.77m
y = 0.49m



µs = x/y ??



x was calculated, turning the given formula around gave me the supposed correct answer.



Thanks
 
Physics news on Phys.org
It looks correct to me.
 
K thx, this part of my assignment relies on your judgement...
 
Actually I'm sorry, I looked at the wrong equation. It should be y/x not x/y. I got .28
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Struggle to understand the concept of the question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Magnitude of the force of static friction
Replies
2
Views
2K
How can I determine the instant the block overcomes static friction?
2
Replies
61
Views
3K
How can we model a rolling truck on an incline using rotational motion analysis?
Replies
24
Views
2K
Finding the coefficient of static friction on an inclined pl
Replies
1
Views
2K
Find min/max accel. for block to stay on wedge (static fric)
Replies
1
Views
2K
Inclined Plane Static Friction Coefficient
Replies
11
Views
4K
Coefficients of kinetic and static friction in a pulley
Replies
28
Views
5K
Coefficient of Friction when Normal Force is Reduced [HS]
Replies
5
Views
2K
Conceptual Question about Static Friction
Replies
1
Views
2K
Coefficient of Static Friction = tan (angle of incline)
Replies
4
Views
21K

Hot Threads

Recent Insights

Back
Top