did everyone get pi/3 s for the spring question; first time for instantaneous rest? I got pi/2. Also anyone know what time we could expect model answers?
did everyone get pi/3 s for the spring question; first time for instantaneous rest? I got pi/2. Also anyone know what time we could expect model answers?
I got Ļ/3. If someone posts the paper I can do model answers
I think he was... there is literally no way the A* boundary will be 70, more in the region of 66-67. what are you smoking mate? you ought to come down from your cocky high. STOP BRAGGING. The difficulty was comparable to june 2013 m4 (UK) so 66 for the A*.
did everyone get pi/3 s for the spring question; first time for instantaneous rest? I got pi/2. Also anyone know what time we could expect model answers?
yes it was pi/3. x in terms of t should have been 1/6 sin 2t - 1/12 sin 4t, therefore dx/dt = 1/3 cos 2t - 1/3 cos 4t. dx/dt = 0 at instantenous rest therefore cos 2t = cos 4t. 2t = 2kĻ +- 4t. at first instantaneous rest k = 1 therefore t = Ļ - 2t 3t = Ļ t = Ļ/3
I think he was... there is literally no way the A* boundary will be 70, more in the region of 66-67. what are you smoking mate? you ought to come down from your cocky high. STOP BRAGGING. The difficulty was comparable to june 2013 m4 (UK) so 66 for the A*.
I'm sorry, but the relative motion questions were gift marks, and that is the area (including myself) people struggle normally. The stability question was a bit dodgy, but most will be able to pick up 2+ marks for some working. The rest of the paper was standard
yes it was pi/3. x in terms of t should have been 1/6 sin 2t - 1/12 sin 4t, therefore dx/dt = 1/3 cos 2t - 1/3 cos 4t. dx/dt = 0 at instantenous rest therefore cos 2t = cos 4t. 2t = 2kĻ +- 4t. at first instantaneous rest k = 1 therefore t = Ļ - 2t 3t = Ļ t = Ļ/3
crap I found when x is 0 : P, do you know how mnay marks that part was?