Zane and Phoebe are sitting on opposite ends of a teeter-totter that is 4.00 m long with the pivot point in the exact center. Zane weighs 443 N and Phoebe weighs 341 N. What torque does Zane\'s weight exert? What torque does Phoebe\'s weight exert? O 1770 N m O 1360 N- m O 886 N m O 682N: m O 1770 N-m O 682 N m O 1360 N-m O 886 N m How much additional torque is needed orn If a 142-N weight is to be added to balance the teeter- totter, how far from Phoebe should it be placed? Phoebe\'s side to balance Zane? 410 N-m O 204 N nm O 102 N m O 1570 N nm O 1.44 m O 0.563 m O 0696 m O 1.30 m
Solution
torque Zane\'s weight exert = 443*2
= 886 N-m
torque phoebe\'s weight exert = 341 *2 = 682 N-m
additional torque required = 886-682 = 204 N-m
let it be placed at a distance x from pivot
886 = 682 + 142x
x = 1.43 m
sp distance from phoebe = 2-1.43 = 0.563 m
.
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Zane and Phoebe are sitting on opposite ends of a teeter-totter that i.docx
1. Zane and Phoebe are sitting on opposite ends of a teeter-totter that is 4.00 m long with the pivot
point in the exact center. Zane weighs 443 N and Phoebe weighs 341 N. What torque does
Zane's weight exert? What torque does Phoebe's weight exert? O 1770 N m O 1360 N- m O
886 N m O 682N: m O 1770 N-m O 682 N m O 1360 N-m O 886 N m How much additional
torque is needed orn If a 142-N weight is to be added to balance the teeter- totter, how far from
Phoebe should it be placed? Phoebe's side to balance Zane? 410 N-m O 204 N nm O 102 N m O
1570 N nm O 1.44 m O 0.563 m O 0696 m O 1.30 m
Solution
torque Zane's weight exert = 443*2
= 886 N-m
torque phoebe's weight exert = 341 *2 = 682 N-m
additional torque required = 886-682 = 204 N-m
let it be placed at a distance x from pivot
886 = 682 + 142x
x = 1.43 m
sp distance from phoebe = 2-1.43 = 0.563 m
