Mechanics Problem HELP!Watch
- Study Helper
1) Try and get all your information into the first post - if there's more than one post it gives the impression, on a quick glance, that the thread has been replied to.
2) Upright photos would be appreciated.
Regarding your actual question.
What can you tell me about the relationship between the forces in the two strings, using the information that's been given?
Now resolve vertically.
Now take moments about A.
At centre of grav, moments balance. In each case you're angle @ (to horiz) from making a right angle between rod and force, for purposes of taking moments.
L_a = distance of centre of grav from A, L_b = L - L_a:
[email protected]_a = (T/2)[email protected](L - L_a)
=> 2.L_a = L - L_a
=> L_a = L/3
Centre of grav is 1/3 of rod's length from A.