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19-10-2016
Chemistry

Answered

Answer question 15 and 16 plz I NEED HELP PLZZZZZZ I REALLY DO NEED HELP PLZZZZ

Answer question 15 and 16 plz I NEED HELP PLZZZZZZ I REALLY DO NEED HELP PLZZZZ class=

Verified Answer :

Anonymous Anonymous

30-10-2016

i cant see the other parts to 15 a and b, sorry.

16a is: yes, because 140n and an additional 5n, would be 145n in all.
16b is: if fixed, yes. Because you said "the pulley is a little dirty, so it adds another 5n of frictional force" thus, it does matter if the pulley is broken or dirty.

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