2020 Edexcel Maths A Level Mechanics Walkthrough

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Chapters:
00:00 Introduction
00:21 Q1 - Forces on a slope
08:05 Q2 - Constant Acceleration in 2D
13:36 Q3 - Variable Acceleration in 2D
22:18 Q4 - Moments on a Ladder
32:43 Q5 - Projectiles

[razzyysf]

Jcole if he focused on his maths class

[geopaxo]

I hate mechanics but when all lots of variables cancel to give a round number it’s so satisfying!

[saidbenrahma]

what a legend!! elite ranking in FUT champs :)

[idontknowwhattonamethish]

in Q1, C you have concluded that acceleration is equal to 0, however can we assume this if it asks about why it will be at rest

[jennaaa-]

on question 4, why did you resolve the force 'mg' into : mgcosA and mgsinA, i dont think your supposed to resolve it when theres no particle acting on it no?

[hhhh]

for question 5 I tried doing it another way but it did not work, could you tell me where I am going wrong.

work out time for horizontal to reach 50m (100/square root 2 U).
then substituite that T value in V= U + at with v=0 (as at greatest height the vertical velocity=0) U= Usin45. a= -9.8

I don't understand why I get a different value of 31 instead of 28

[SeaCashew-jrsg]

why did you need to take moments for N (29:35) but not need to take moments for F, why couldnt you have just set N = the opposite force like you did with the friction

[madbantmatt]

For Q4 (a) in mechanics, why couldn’t you let Nsin(α) x 4a = Mgcos(α) x 3a and rearrange for N?

[mohzayd]

Hello. I can’t find the 2022 papers walkthroughs anymore, where they removed?

[captainblocker]

40:46 bro left his calculator in radians