Tbonethegreat
Badges: 2
Rep:
?
#1
Report Thread starter 8 months ago
#1
Need help with this:

A box of mass 12kg is attached to the roof of a lift by a light extensible string. The mass of the lift is 450kg and it is supported by a cable that is modelled as light an inextensible. The tension in the cable is 5300N. Find the tension in the string

The answer says 138N, dont know how to get there
0
reply
mqb2766
Badges: 18
Rep:
?
#2
Report 8 months ago
#2
(Original post by Tbonethegreat)
Need help with this:

A box of mass 12kg is attached to the roof of a lift by a light extensible string. The mass of the lift is 450kg and it is supported by a cable that is modelled as light an inextensible. The tension in the cable is 5300N. Find the tension in the string

The answer says 138N, dont know how to get there
Have you a picture of the question / what have you tried?
Last edited by mqb2766; 8 months ago
0
reply
David Getling
Badges: 19
Rep:
?
#3
Report 8 months ago
#3
(Original post by Tbonethegreat)
Need help with this:

A box of mass 12kg is attached to the roof of a lift by a light extensible string. The mass of the lift is 450kg and it is supported by a cable that is modelled as light an inextensible. The tension in the cable is 5300N. Find the tension in the string

The answer says 138N, dont know how to get there
So what is the resultant force on the lift + weight?
Then, what is the acceleration of the lot?
Finally, what tension in the string is needed to cause this acceleration in the weight?
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Should there be a new university admissions system that ditches predicted grades?

No, I think predicted grades should still be used to make offers (589)
33.95%
Yes, I like the idea of applying to uni after I received my grades (PQA) (720)
41.5%
Yes, I like the idea of receiving offers only after I receive my grades (PQO) (347)
20%
I think there is a better option than the ones suggested (let us know in the thread!) (79)
4.55%

Watched Threads

View All
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise