Original post by mqb2766
Each of the two masses are multiplied by 1.01, so it must be the same for r for the force to be the same. So thats the fractional change (1.01-1).
Do you not need to do any working on the equation for that? Like how do you know r changes proportionally?
Original post by mqb2766
Each of the two masses are multiplied by 1.01, so it must be the same for r for the force to be the same. So thats the fractional change (1.01-1).
Is it that you just use the equation normally actually? I don’t know why but I thought you would use the differential expression because that is part i
(edited 10 months ago)
Original post by grhas98
Do you not need to do any working on the equation for that? Like how do you know r changes proportionally?
It should be almost obvious? (1.01)^2 on both the num and denom to get the same force. You could put some working in, but ...
WHat diff expression did you get in i)?
(edited 10 months ago)
Original post by mqb2766
It should be almost obvious? (1.01)^2 on both the num and denom to get the same force. You could put some working in, but ...
WHat diff expression did you get in i)?
WHat diff expression did you get in i)?
Well yea actually looking at F is is pretty obviously now I just thought to use the diff expression
dF = -Gm1m2/r^3 dr + Gm2/r^2 dm1 + Gm1/r^2 dm2 because of pary i!
Original post by grhas98
Well yea actually looking at F is is pretty obviously now I just thought to use the diff expression
dF = -Gm1m2/r^3 dr + Gm2/r^2 dm1 + Gm1/r^2 dm2 because of pary i!
dF = -Gm1m2/r^3 dr + Gm2/r^2 dm1 + Gm1/r^2 dm2 because of pary i!
If you did use that and dF = 0 then
2 dr/r = dm1 / m1 + dm2 / m2 = 0.01 + 0.01
dr/r is the fractional change and similarly for the masses.
Original post by mqb2766
If you did use that and dF = 0 then
2 dr/r = dm1 / m1 + dm2 / m2 = 0.01 + 0.01
dr/r is the fractional change and similarly for the masses.
2 dr/r = dm1 / m1 + dm2 / m2 = 0.01 + 0.01
dr/r is the fractional change and similarly for the masses.
Ah I see, yes I was saying that dm1 = 0.01 but of course it is related to the current value of m1 thank you!
Quick Reply
Related discussions
- Convergence of Fourier series
- (help!!) what does differentiation mean??
- OCR A-level Mathematics A Paper 1 (H240/01) - 6th June 2023 [Exam Chat]
- Partial differentiation question
- Dimensional Analysis
- Math help - partial derivatives
- Tension in a Simple Pendulum
- Can't seem to put in effort into studying
- Nutella OR Lotus Biscoff?
- Chem a level buffers question
- A-level maths help :(
- Series function not differentiable at a point
- Simple differentiation question
- A Level Trig Help
- Oxbridge Maths - Interview Questions
- Amount of substance q help
- integration
- Do you think I was ungrateful?
- how does owning a property effect your student finance
- Riemann sums
Latest
Trending
Last reply 4 days 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
Trending
Last reply 4 days 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
