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Unformatted text preview: armington (kma786) hw0215 fiete (57165) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points An elevator is being lifted up an elevator shaft at a constant speed by a steel cable as shown in the figure below. All frictional effects are negligible. steel cable Elevator going up at constant speed In this situation, forces on the elevator are such that 1. the upward force by the cable is greater than the sum of the downward force of gravity and a downward force due to the air. 2. the upward force by the cable is equal to the downward force of gravity. correct 3. None of these. (The elevator goes up because the cable is being shortened, not be- cause an upward force is exerted on the eleva- tor by the cable.) 4. the upward force by the cable is smaller than the downward force of gravity....
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This note was uploaded on 02/21/2011 for the course PHY 301 taught by Professor Swinney during the Spring '07 term at University of Texas at Austin.
- Spring '07