I get part a and b, but I don't know any limitations to this model? Anyone got any suggestions?

For those of you who can't see the image, the question is this:

Two particles P and Q have mass 4 kg and 0.5 kg respectively. The particles are attached to the ends of a light inextensible string. Particle P is held at rest on a fixed rough plane, which is inclined to the horizontal at an angle 𝛼𝛼 where tan 𝛼 = 4 3 . The coefficient of friction between P and the plane is 0.5. The string lies along the plane and passes over a small smooth light pulley which is fixed at the top of the plane. Particle Q hangs freely at rest vertically below the pulley. The string lies in the vertical plane which contains the pulley and a line of greatest slope of the inclined plane, as shown in the figure above. Particle P is released from rest with the string taut and slides down the plane.

Given that Q has not hit the pulley, find (a) the tension in the string during the motion, (b) the magnitude of the resultant force exerted on the string by the pulley. (c) give one limitation to the model.

Thank you in advance!

Original post by lath.08

I get part a and b, but I don't know any limitations to this model? Anyone got any suggestions?

For those of you who can't see the image, the question is this:

Two particles P and Q have mass 4 kg and 0.5 kg respectively. The particles are attached to the ends of a light inextensible string. Particle P is held at rest on a fixed rough plane, which is inclined to the horizontal at an angle 𝛼𝛼 where tan 𝛼 = 4 3 . The coefficient of friction between P and the plane is 0.5. The string lies along the plane and passes over a small smooth light pulley which is fixed at the top of the plane. Particle Q hangs freely at rest vertically below the pulley. The string lies in the vertical plane which contains the pulley and a line of greatest slope of the inclined plane, as shown in the figure above. Particle P is released from rest with the string taut and slides down the plane.

Given that Q has not hit the pulley, find (a) the tension in the string during the motion, (b) the magnitude of the resultant force exerted on the string by the pulley. (c) give one limitation to the model.

Thank you in advance!

I get part a and b, but I don't know any limitations to this model? Anyone got any suggestions?

For those of you who can't see the image, the question is this:

Two particles P and Q have mass 4 kg and 0.5 kg respectively. The particles are attached to the ends of a light inextensible string. Particle P is held at rest on a fixed rough plane, which is inclined to the horizontal at an angle 𝛼𝛼 where tan 𝛼 = 4 3 . The coefficient of friction between P and the plane is 0.5. The string lies along the plane and passes over a small smooth light pulley which is fixed at the top of the plane. Particle Q hangs freely at rest vertically below the pulley. The string lies in the vertical plane which contains the pulley and a line of greatest slope of the inclined plane, as shown in the figure above. Particle P is released from rest with the string taut and slides down the plane.

Given that Q has not hit the pulley, find (a) the tension in the string during the motion, (b) the magnitude of the resultant force exerted on the string by the pulley. (c) give one limitation to the model.

Thank you in advance!

As part b) is about the pulley, you could think of any assumptions/limitations about that?

- Maths - mechanics
- A-Level Mechanics Help
- Friction Question Help
- Force Diagram (A2 Edexcel)
- mechanics 1 math
- Help with A level maths questions
- Help mechanics
- A Level Mechanics
- m1 june 2002 paper
- Vectors with mechanics question
- A level physics Magnetic Fields Question (5)
- Physics question resultant forces
- A-level Maths Mechanics Question
- Tips for drawing components of forces in A-level Maths mechanics
- Resolving Forces
- Urgent Resultant force maths question plsss help!!
- Physics question circular motion
- Hard friction question
- Understanding physics #1
- Mechanics Friction & Forces Question

Last reply 2 minutes ago

Is there any point investing if you can only afford a small amountLast reply 3 minutes ago

Official UCL Offer Holders Thread for 2024 entryLast reply 4 minutes ago

NEXT Employee Official Thread .................. *for those already employed by NEXT.Last reply 4 minutes ago

Official Cambridge Postgraduate Applicants 2024 ThreadLast reply 7 minutes ago

Official: University of Bristol A100 2024 Entry ApplicantsLast reply 8 minutes ago

Official London School of Economics and Political Science 2024 Applicant ThreadLast reply 13 minutes ago

Looking for any current/former students from UCL's MSc in Clinical NeuroscienceLast reply 14 minutes ago

Official University College London Applicant Thread for 2024Last reply 1 day ago

Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago

Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths

71

Last reply 1 day ago

Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago

Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths

71