m1

object A OF mass 5kg connected by a light, inextensible string passes over smooth pulley to box B of mass 4kg. There is an object C of mass 2kg resting on the horiz floor of the box. find acc

EQ:

A: t-mg=ma
B:4g+2g-t=7a
c:t-2g=2a

not too sure about c?

Reply 1

TeeEm

19

Original post by svirdi

object A OF mass 5kg connected by a light, inextensible string passes over smooth pulley to box B of mass 4kg. There is an object C of mass 2kg resting on the horiz floor of the box. find acc

EQ:

A: t-mg=ma
B:4g+2g-t=7a
c:t-2g=2a

not too sure about c?

post a picture of the question from the book and your workings as an attachment.

It is easier and quicker for everybody :smile:

Reply 2

TenOfThem

18

Original post by svirdi

object A OF mass 5kg connected by a light, inextensible string passes over smooth pulley to box B of mass 4kg. There is an object C of mass 2kg resting on the horiz floor of the box. find acc

EQ:

A: t-mg=ma
B:4g+2g-t=7a
c:t-2g=2a

not too sure about c?

I am struggling to see what you have done here

In A you know that he mass is 5
In B why do you have 7a
Is C to do with object C - if so it has no tension related to it