8.2. A metal bar hangs loosely from a pivot on the ceiling. A parent pushes on the bar with a force F₁ horizontally at a distance y₁ = 0.6 m below the ceiling. Their child pushes near the bottom of the bar in the opposite direction, applying a force F₂ = 35 N at a point y₁ = 1.1 m below where their parent is pushing. (a) How hard does the parent have to push to keep the bar from moving? (b) What is the magnitude and direction of the net force on the pivot point if the mass of the bar is 1.8 kg? F2 Y1 Y2 F₁
8.2. A metal bar hangs loosely from a pivot on the ceiling. A parent pushes on the bar with a force F₁ horizontally at a distance y₁ = 0.6 m below the ceiling. Their child pushes near the bottom of the bar in the opposite direction, applying a force F₂ = 35 N at a point y₁ = 1.1 m below where their parent is pushing. (a) How hard does the parent have to push to keep the bar from moving? (b) What is the magnitude and direction of the net force on the pivot point if the mass of the bar is 1.8 kg? F2 Y1 Y2 F₁
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter9: Momentum And Its Conservation
Section: Chapter Questions
Problem 1STP
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