When both rockets A an B are on, the forces are equal so there is a torque which produces a turning force/rotational force- so it rotates?
When just A is turned on, the net force favours the direction of A since A>B. I think?
This was posted from The Student Room's iPhone/iPad App
(Original post by blackhole)
could you remind me what question was this? cant even remember!
Well there was a spring with force constant 50 and was compressed by 0.07 metres. The time the force was applied for - or something like that - was 0.094 seconds.
Really interested as to how everyone got 2.6 as i could not do this question for the life of me!
(Original post by emah123)
can someone please make an unofficial markscheme???
If somebody has the paper I will make an unofficial mark scheme, I can remember most of the questions and answers but I really don't want to do a MS without the paper tbh, I got around 53-54/60 Which should hopefully be 90+ UMS I would suspect based upon previous boundaries.
What do people reckon full ums boundary and A boundary will be
from answers i remember: radius = 10
Force for glider question was 3.5N
work done or whatever it was for that question i got 1.30 cause work done is 1/2fx not fx
for the further reason why it is better for last question i said about energy supply is constant
2 angle questions i got 11 something and 53 i think
efficiency 27.3% rounded
WHAT WAS THE ROCKETS ABOUT NET FORCE OR NET MOMENT? cause how can you assume that it creates a turning effect