Prt i Calculator -nd Periodic Table estion 1 of rrect this question was written

Question

Prt i Calculator -nd Periodic Table estion 1 of rrect this question was written by John Carlson at University of Colorado, Denver Map sapling learning niform 255N rod that is 2.00 m long carries a 225N weight at its right end and an unknown weight W oward the left end - see the figure. When W is placed 50.0cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 75.0cm from the right end. Find W: Find W: Number 150 If W is now moved 25.0cm to the right, how far must the fulcrum be moved to restore balance? Number 7.5 cm 225 N Incorrect.

Explanation / Answer

a) sum torque about the fulcrum W*.75+255*0.25-225*0.75=0
solve for W   W=(225*0.75-255*0.25)/.75
W=140 N

b) Sum torque about the fulcrum, it will be placed x distance from the right end
140*(2-x)+255*(1-x)-225*x=0
(280+255)/(225+255+140)=x
x=0.863 from the right end

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