hey struglling with part bii of question 38.. i couldnt upload the question so i linked the paper and markscheme.

basically, for part bii, it says the horizontal component of T is equal to 9974, which is the same as the horizontal component of P. but when i checked the vertical components of P and T, they aren't equal? so the system cannot be in equilibrium right? if anyone could help out id be so grateful thanks!!!

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics.pdf

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics%2520MS.pdf

basically, for part bii, it says the horizontal component of T is equal to 9974, which is the same as the horizontal component of P. but when i checked the vertical components of P and T, they aren't equal? so the system cannot be in equilibrium right? if anyone could help out id be so grateful thanks!!!

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics.pdf

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics%2520MS.pdf

(edited 2 months ago)

Original post by Nat4695

hey struglling with part bii of question 38.. i couldnt upload the question so i linked the paper and markscheme.

basically, for part bii, it says the horizontal component of T is equal to 9974, which is the same as the horizontal component of P. but when i checked the vertical components of P and T, they aren't equal? so the system cannot be in equilibrium right? if anyone could help out id be so grateful thanks!!!

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics.pdf

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics%2520MS.pdf

basically, for part bii, it says the horizontal component of T is equal to 9974, which is the same as the horizontal component of P. but when i checked the vertical components of P and T, they aren't equal? so the system cannot be in equilibrium right? if anyone could help out id be so grateful thanks!!!

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics.pdf

https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FPhysics%2FA-level%2FTopic-Qs%2FEdexcel%2F02-Mechanics%2FSet-D%2FMechanics%2520MS.pdf

If you consder the vertical forces acting on the wheel, theyre (approximately) zero so

weight + T vertical = P vertical

Original post by Nat4695

thanks! Do you have any advice on how to spot these sort of things? I’m pretty solid in theory in general but it seems to escape my head sometimes when I look at a question that feels unfamiliar or challenging

For an object to be in equilibrium you have to balance the forces acting on that body. Here, the horizonntal forces are equal (and opposite, N3) because you consider the horizontal forces acting on the wheel (in equilibrium). Similarly for the vertical forces acting on the wheel.

The boring advice is to do Newton carefully. Pick the object, sketch the forces acting on it, work out their directions/signs and equate.

Note if both the horizontal and vertical componennts of the two forces were equal, then the two forces would be equal which clearly theyre not.

(edited 2 months ago)

Original post by Nat4695

thanks! Do you have any advice on how to spot these sort of things? I’m pretty solid in theory in general but it seems to escape my head sometimes when I look at a question that feels unfamiliar or challenging

Good large diagram and remember all the forces acting in the given direction.

I don't think there's anything particularly different about this question.

- Further Mechanics 1 Question
- A level maths mechanics moments and forces question
- A-Level Mechanics Help
- Tension in a Simple Pendulum
- Force Diagram (A2 Edexcel)
- alevel mechanics moments help
- Friction Question Help
- Forces a levels
- maths a level mechanics question
- Isaac Physics help
- Physics question circular motion
- Friction question
- m1 june 2002 paper
- Why is tension not equal to weight in moments questions?
- A Level Mechanics
- Excerise 7D Question 5 (Edexcel A-level maths year 2 applied(
- Moment of force difficult question
- don't understand force exerted by A on B
- Maths - mechanics
- A level physics - Mechanics question

Last reply 1 minute ago

Official University of Edinburgh Applicant Thread for 2024Last reply 10 minutes ago

Official Cambridge Postgraduate Applicants 2024 ThreadPosted 12 minutes ago

Home office immigration enforcement pre employment checksLast reply 13 minutes ago

Can i pass the ACA without a degree and just grade 5 gcse maths?Last reply 13 minutes ago

IBM Degree Apprenticeship 2024Last reply 14 minutes ago

Account details don’t match with parents STUDENT FINANCE ENGLAND!Last reply 14 minutes ago

JP Morgan Technology Degree Apprenticeship 2024Last reply 18 minutes ago

Does Sutton Trust actually guarantee an offer? For St andrewsLast reply 19 minutes ago

Current LSE Student - happy to answer any questionsLast reply 20 minutes ago

Is Nursing MSc Exempt from second Masters funding