Calculating Coefficient of Friction for a Pulley System

AI Thread Summary
A block is pulling another block across a wooden surface via a pulley, and the goal is to determine the kinetic coefficient of friction. The friction force was calculated as 1.03N, and the relationship between the masses and gravitational force is being analyzed. There is confusion regarding the meaning of the equation 1.03N=m2/m1(m1g) and the role of the measured friction force. Clarification is needed on whether the setup involves a horizontal or angled rope and the correct interpretation of the forces involved. Accurate calculations are essential to resolve discrepancies in the measured mass and the expected values.
jrab
Messages
9
Reaction score
0

Homework Statement



if i am missing something that prevents you from answering and let me know ill try and add it

A block pulls another block across a wooden surface via a pulley at a constant speed. the surface is horizontal
the mass of the block on the horizontal surface is unknown. determine kinetic co efficient of friction.

friction was determined to be 1.03N

Ff=F2g<-- force of masses pulling down on string (since its constant f2g or the fa must equal friction in order to get a net force of zero)

coefficient is equal to mass2/mass1

i have this equation of

1.03N=m2/m1(m1g)

m2 is equal to 0.1051kg

when i try to solve for m1 i get a value of one, we measured the mass with a scale and it is around .3160kg, what am i doing wrong.

sorry if i left anything out just let me know
 
Last edited:
Physics news on Phys.org
i don't understand what you're doing :confused:

is this a block of mass m1 on a horizontal table attached by a rope over a frictionless pulley to a another mass m2 hanging vertically, with m2 given as 0.1051kg?

is the rope horizontal, or at an angle?

what is the 1.03N supposed to be (it's obviously not the coefficient of friction)? how did you measure it?

what does "1.03N=m2/m1(m1g)" mean?
 

Thread 'Struggling to understand the concept of this 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 »
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 »

Similar threads

Newton's Second Law (Pulley Sustem)
Replies
3
Views
2K
Friction problem of a block sandwiched between 2 surfaces
Replies
6
Views
1K
Coefficient of Friction when Normal Force is Reduced [HS]
Replies
5
Views
2K
Friction, Mass and Acceleration: Analyzing Block Motion
Replies
6
Views
2K
Friction Coefficients: Determining Force Direction?
Replies
6
Views
1K
Finding the work done by a block
Replies
4
Views
3K
Coefficient of friction of a sandwiched body
Replies
15
Views
850
Mechanical Physics: Coefficient of Friction
Replies
20
Views
3K
Pulley with friction, how to get the friction in the pulley?
Replies
23
Views
2K
Find the acceleration of the system (2 blocks sliding on a table)
Replies
23
Views
2K

Hot Threads

Recent Insights

Back
Top