The Student Room Group

Maths question!!

Screenshot 2021-02-23 at 10.08.05.png
can someone help me with how I should answer this

Scroll to see replies

Original post by wevegota2319
can someone help me with how I should answer this

answer what???? nothing here
Original post by MMtrapzz
answer what???? nothing here

just sent it !!
Original post by wevegota2319
just sent it !!

ummmmmmm im not really sure sorry :frown:
Reply 4
Original post by wevegota2319
just sent it !!

Have you drawn the forces diagram and resolved forces?
Original post by mqb2766
Have you drawn the forces diagram and resolved forces?

I tried but I got it wrong
Original post by mqb2766
Have you drawn the forces diagram and resolved forces?

I don't know hoe to draw the string extending incline by 25 degrees
Original post by mqb2766
Have you drawn the forces diagram and resolved forces?

this is what I have done
Reply 8
Original post by wevegota2319
I tried but I got it wrong

Upload what you did.
Original post by mqb2766
Upload what you did.

I think it sent let me know if it didnt!!
Original post by wevegota2319
this is what I have done

So where is the rope tension and friction on the diagram?
The key thing is to put all forces on the diagram to create the force equations.
Original post by mqb2766
So where is the rope tension and friction on the diagram?
The key thing is to put all forces on the diagram to create the force equations.

I don't know where to draw the rope tension as in the angle I can't visually understand it
Original post by wevegota2319
I don't know where to draw the rope tension as in the angle I can't visually understand it

It's at 25 degrees to (above) the slope. Imagine youre dragging a sledge by a rope up a hill. This is similar.
(edited 3 years ago)
Original post by mqb2766
It's at 25 degrees to (above) the slope. Imagine youre dragging a sledge by a rope up a hill. This is similar.

IMG_7417.JPGwould it look like this?
Original post by wevegota2319
IMG_7417.JPGwould it look like this?

25 degrees to the slope, so ... to the horizontal.
Generally you'd put the rope at the leading edge of the block, but not too important.
Where is the friction?
Original post by mqb2766
25 degrees to the slope, so ... to the horizontal.
Generally you'd put the rope at the leading edge of the block, but not too important.
Where is the friction?

the right side of the box?
Original post by wevegota2319
the right side of the box?

Friction has an arrow (direction) which isn't on your diagram. You must have covered an example/question like this?
(edited 3 years ago)
Original post by wevegota2319
IMG_7417.JPGwould it look like this?

your 25 degrees is in the wrong place. it should be between the slope and the rope.
Original post by the bear
your 25 degrees is in the wrong place. it should be between the slope and the rope.

but where would the rope be?
Original post by wevegota2319
but where would the rope be?

Leading edge of the box. It is not too important (convention) where it is, but angle and friction are important.

Quick Reply