# HW Ch12 - HW Ch 12 Static Equilibrium and Elasticity...

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HW Ch. 12 Static Equilibrium and Elasticity Chapter 12: Static Equilibrium and Elasticity Conceptual problems 12.C. 1 (5.00) The sketch shows a rod divided into five equal parts. The rod has negligible mass and a fixed pivot at point c. An upward force of magnitude F is applied at point a, and an identical force is applied at point f, as shown. At what point on the rod could you apply a third force of the same magnitude F , perpendicular to the rod, either upward or downward, so that the net torque on the rod is zero? Check all of the points for which this is possible. a b c d e f Answer is B and D (0/2 submissions used) 12.C. 4 (5.00) (a) Which point is the proportionality limit? (b) Which point is the rupture point? (c) Which point is the elastic limit? (a) Point 1Point 2Point 3Point 4Point 5Point 6 (0/2 submissions used) (b) Point 1Point 2Point 3Point 4Point 5Point 6 (0/2 submissions used) (c) Point 1Point 2Point 3Point 4Point 5Point 6 (0/2 submissions used) 12.C. 5 (5.00) Suppose you have four rods made of four different materials-aluminum, copper, steel and titanium. They all have the same dimensions, and the same force is applied to each. Order the rods from smallest to largest by how much each stretches.

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AluminumCopper SteelTitanium (0/2 submissions used) , Aluminum CopperSteelTitanium (0/2 submissions used) , AluminumCopperSteel Titanium (0/2 submissions used) , AluminumCopperSteelTitanium (0/2 submissions used) Section 1: Static equilibrium 12.1.1 (5.00) Two children sit 3.20 m apart on a very low-mass horizontal seesaw with a movable fulcrum. The child on the left has a mass of 29.0 kg, and the child on the right has a mass of 38.0 kg. At what distance, as measured from the child on
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## This note was uploaded on 05/11/2011 for the course PHYS 1401 taught by Professor Broyles during the Spring '08 term at Collin College.

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HW Ch12 - HW Ch 12 Static Equilibrium and Elasticity...

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