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# M2 help me rearrange this to this format pls! show that KE loss is... watch

1. help please, ive reached this point. and it should be expressed as shown below,u in pencil. how do I go about it? thanks a lot!!!
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2. (Original post by sarah99630)
help please, ive reached this point. and it should be expressed as shown below,u in pencil. how do I go about it? thanks a lot!!!
you have not made a mistake.

now you need to factorise out mu2/2 and simplify the two fractions in the bracket.
3. Alright, so you can express 1/2 mu^2 as mu^2 /2. Next subtract the 2 fractions as you normally would (hint get the same denominator). Once you have done this the 2 m^2u^2 cancel leaving ya with the required format hope this helps! feel free to msg me if you need further assistance
4. (Original post by the bear)
you have not made a mistake.

now you need to factorise out mu2/2 and simplify the two fractions in the bracket.
thank youuu! haha im still confused tho, sorry, arent we supposed to minus the fractions normally? and the lcm as 2 (m+M)?? I tried and didnt get the answer so idk what to do
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5. (Original post by sarah99630)
thank youuu! haha im still confused tho, sorry, arent we supposed to minus the fractions normally? and the lcm as 2 (m+M)?? I tried and didnt get the answer so idk what to do
simplify 1 - m/{ M + m } in the usual way
6. (Original post by the bear)
simplify 1 - m/{ M + m } in the usual way
ahaa done, thanks A LOT!! lifesaver
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7. (Original post by assassinjeev22)
Alright, so you can express 1/2 mu^2 as mu^2 /2. Next subtract the 2 fractions as you normally would (hint get the same denominator). Once you have done this the 2 m^2u^2 cancel leaving ya with the required format hope this helps! feel free to msg me if you need further assistance
got it! lifesaver. thank you!
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