# physics question

• Oct 24th 2009, 10:04 PM
daphnewoon
physics question
[IMG]file:///C:/Users/91621/AppData/Local/Temp/moz-screenshot.png[/IMG]1.Consider an object with several forces acted on it from various directions, as shown in the diagram below. Calculate the resultant forces in the x and y directions.
[IMG]file:///C:/Users/91621/AppData/Local/Temp/moz-screenshot-1.png[/IMG]
• Oct 25th 2009, 01:34 AM
Quote:

Originally Posted by daphnewoon
[IMG]file:///C:/Users/91621/AppData/Local/Temp/moz-screenshot.png[/IMG]1.Consider an object with several forces acted on it from various directions, as shown in the diagram below. Calculate the resultant forces in the x and y directions.
[IMG]file:///C:/Users/91621/AppData/Local/Temp/moz-screenshot-1.png[/IMG]

HI

Your diagram is not very clear , i can only see the arrows .
Btw ,

I am sure you know that you will need to resolve all the forces horizontally and vertically .

For horizontals , resolve all forces horizontally , then find the resultant force (Big minus small) ,

Do the same thing to vertical .

when you resolve , you also need to consider the direction of the forces , as to whether its going to the left or right side , up or down .

Give it a shot .
• Oct 25th 2009, 02:19 AM
daphnewoon
further clarification

I knew that i need to resolve the forces but i dont get the right value.
could u write out the working specifically?
So sorry for the trouble!
• Oct 25th 2009, 02:29 AM
Quote:

Originally Posted by daphnewoon

I knew that i need to resolve the forces but i dont get the right value.
could u write out the working specifically?
So sorry for the trouble!

See the diagram i attached . I know its terrible .(Speechless)

I cant see what are the forces in your diagram so i use F1 , ... to denote them .

For horizontals , forces going to the left are

$\displaystyle F_1\cos 60$ and $\displaystyle F_3$

To right : $\displaystyle F_2\cos 60$ and $\displaystyle F_4\cos 45$

Find which is greater , then take the difference between the right side and LS forces .

DO the same for vertical .