swagswagyoloswag
Member
- Joined
- Mar 13, 2015
- Messages
- 100
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- HSC
- 2015
http://imgur.com/LJpmGsZ
For (ii) I keep getting an extra "+sin(phi)" at the numeratorbecause of the product rule?
for (iii) I can't show it but does that imply that dtheta/dt also equal zero? sounds odd. because, if NT is tangential, angle NTO = 90, angle NOT = 180-theta which means phi = theta-90
dphi/dt = dtheta/dt
so if dphi/dt = 0 then dtheta/dt must also equal zero? wut?
For (ii) I keep getting an extra "+sin(phi)" at the numeratorbecause of the product rule?
for (iii) I can't show it but does that imply that dtheta/dt also equal zero? sounds odd. because, if NT is tangential, angle NTO = 90, angle NOT = 180-theta which means phi = theta-90
dphi/dt = dtheta/dt
so if dphi/dt = 0 then dtheta/dt must also equal zero? wut?
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