A uniform, 249-N rod that is 2.10 in long carries a 225-N weight at its right en

Question

A uniform, 249-N rod that is 2.10 in long carries a 225-N weight at its right end and an unknown weight W toward the left end (see the figure (Figure 1)). When W is placed 55.4 cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 67.4 cm from the right end. Find W. Part B If W is now moved 26.0 cm to the right, how far must the fulcrum be moved to restore balance? Part C If W is now moved 26.0 cm to the right, in what direction must the fulcrum be moved to restore balance?

Explanation / Answer

A) Balancing torque, we have W=225x67.4/(210-55.4-67.4) N = 173.91 N

B) The frucum will be moved so that the torque is balanced about it, this gives : 11.33 cm to right.

C) to the right

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