Learning Goal: To make the connection between intuitive understanding of a seesaw and the standard formalism for torque. This problem deals with the concept of torque, the "twist" that an off-center force applies to a body that tends to make it rotate. (Figure 1) Figure Lend La Fx ما 3 of 3 Review Constants Gilles has an identical twin, Jean, also of weight w. The two twins now sit on the same side of the seesaw, with Gilles at distance L2 from the pivot and Jean at distance L3. (Figure 2) Part D Where should Marcel position Jacques to balance the seesaw? Express your answer in terms of L2, L3, W, and w. View Available Hint(s) w(L3+L₂) Submit Previous Answers ✓ Correct Part E Bad news! When Marcel finds the distance L from the previous part, it turns out to be greater than Lend, the distance from the pivot to the end of the seesaw. Hence, even with Jacques at the very end of the seesaw, the twins Gilles and Jean exert more torque than Jacques does. Marcel now elects to balance the seesaw by pushing sideways on an ornament (shown in red) that is at height h above the pivot. (Figure 3) With what force in the rightward direction, F₂, should Marcel push? If your expression would give a negative result (using actual values) that just means the force should be toward the left. Express your answer in terms of W, Lend, w, L2, L3, and h. View Available Hint(s) --| ΑΣΦΑ 6 A Ĉ Pa 2
Learning Goal: To make the connection between intuitive understanding of a seesaw and the standard formalism for torque. This problem deals with the concept of torque, the "twist" that an off-center force applies to a body that tends to make it rotate. (Figure 1) Figure Lend La Fx ما 3 of 3 Review Constants Gilles has an identical twin, Jean, also of weight w. The two twins now sit on the same side of the seesaw, with Gilles at distance L2 from the pivot and Jean at distance L3. (Figure 2) Part D Where should Marcel position Jacques to balance the seesaw? Express your answer in terms of L2, L3, W, and w. View Available Hint(s) w(L3+L₂) Submit Previous Answers ✓ Correct Part E Bad news! When Marcel finds the distance L from the previous part, it turns out to be greater than Lend, the distance from the pivot to the end of the seesaw. Hence, even with Jacques at the very end of the seesaw, the twins Gilles and Jean exert more torque than Jacques does. Marcel now elects to balance the seesaw by pushing sideways on an ornament (shown in red) that is at height h above the pivot. (Figure 3) With what force in the rightward direction, F₂, should Marcel push? If your expression would give a negative result (using actual values) that just means the force should be toward the left. Express your answer in terms of W, Lend, w, L2, L3, and h. View Available Hint(s) --| ΑΣΦΑ 6 A Ĉ Pa 2
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter10: Rotational Motion And Angular Momentum
Section: Chapter Questions
Problem 16CQ: Helicopters have a small propeller on their tail to keep them from rotating in the opposite...
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I just need help with part E please! Thank you!
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