M2 question - any help will be much appreciated

H4SS4N4TOR

hi

Reply 1

H4SS4N4TOR

OP

Sorry I accidentally submitted the thread :mad:

i just wanted to ask if someone could help me on a question on the work energy principle. It is question 2(v)
http://www.mei.org.uk/files/papers/m205ju_ftnd74.pdf

i understand most of it but don't understand how they have got 105/20 to be the height for the GPE term and also why is it a minus . Could you please help me on when to know if something it taken away or added.

Thanks a lot, any help will be repped :smile:

Reply 2

brianeverit

9

Original post by H4SS4N4TOR

Sorry I accidentally submitted the thread :mad:

i just wanted to ask if someone could help me on a question on the work energy principle. It is question 2(v)
http://www.mei.org.uk/files/papers/m205ju_ftnd74.pdf

i understand most of it but don't understand how they have got 105/20 to be the height for the GPE term and also why is it a minus . Could you please help me on when to know if something it taken away or added.

Thanks a lot, any help will be repped :smile: