Hi, im a bit confused on the question at 10:34. why does 4r^2 -> 16r^2 and not just 16r? I thought that you would do 4x4 and get 16 but then the square is used up, but its still there? Also why you divide f2 by f (and the rest by the original forumla, you say for ratios?) and not just have F(2) = GMm/4r^2. sorry if this is a bit too late haha, happy holidays
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really helped me understand how to do questions without much data given, and how to work with these equations. Thanks!
Thx so much, my teacher spended 2 week explaining this....
You're very welcome! Cheers, Mitch
Hi, im a bit confused on the question at 10:34. why does 4r^2 -> 16r^2 and not just 16r? I thought that you would do 4x4 and get 16 but then the square is used up, but its still there? Also why you divide f2 by f (and the rest by the original forumla, you say for ratios?) and not just have F(2) = GMm/4r^2. sorry if this is a bit too late haha, happy holidays
The 4r is in brackets so the power acts on all the values inside that bracket so its like writing 4^2 r^2, hope this was helpful