I just wanted to say thank you for this! My physics teacher did an online lesson on this for an hour I didn’t understand it at all, watched your two videos completely/ confidently understand this now! :)
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_2.11. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom
these videos have been the only thing that makes me have hope for these assessments and so thankyou for all the effort you put into them because they really help!
I've been using your videos for the past few weeks for help with all my science revisions for my upcoming end of year exams, they really do help me understand these topics a lot and sciences are usually my weakest subjects. Especially Physics.
Quick question: "total work done remains the same" -- is that saying the total work done by the ENGINE doesn't change (isn't doubled), or the work done by GEAR A is the same as that done by GEAR B? Great video, so thanks.
I wanted to ask what we actually mean by turning effect. So is that how much something has turned, eg like 90 degrees??? So if a lever turns something 90 degrees but another turns something 60 degrees, then therefore the first one had a greater turning effect right? Also why does the output force being close to pivot mean that there is a larger out put force. Is it cos M=Fd so if distance is smaller from pivot, but moment is same, then force must be greater??? This topic really confuses me!
All exam boards (e.g. AQA, Edexcel etc) will have some past papers with mark schemes on their websites - you can usually just google what you're looking for though and they'll come up!
The rock and see saw one , only mentions the distance required to keep the sea saw stationary not turn it clockwise, for it to move clockwise moment clockwise needs to be more , so therefore distance needs to be increased
