College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A person of weight 480 N stands on a scale in an elevator. What will the scale be reading when the elevator is decelerating downward at 1.00 m/s 2 ?
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- While pushing your 55.0 kg lawnmower across the lawn (μ = 0.100) you notice that the handle makes an angle that is 55.0° below the horizontal. What force must you push the lawnmower with in order to have it accelerate at 2.0 m/s²?arrow_forwardAn elevator cab that weighs 20.8 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.10 m/s2 and (b) decreasing at a rate of 1.10 m/s2?arrow_forwardA 5.0 kg mass is attached to the ceiling of an elevator by a rope whose mass is negligible. What force does the mass exert on the rope when the elvator has an acceleration of 4.0 m/s2 upward?arrow_forward
- A person of weighing 0.83 kN rides in an elevator that has an upward acceleration of 0.8 m/s2. What is the magnitude of the force of the elevator floor on the person, in newtons?arrow_forwardA 45 kg box hangs from a rope. What is the tension in the rope if:(a) the box is at rest?(b) the box is rising with a constant velocity of 4.0 m/s?(c) the box is rising and speeding up at 4.5 m/s2?arrow_forwardTwo forces (17.0 N at 26.0° south of east, and 52.0 N at 58.0° north of west) are applied to a 200 kg object. If the net force is determined by these two forces, then find the acceleration of the object. magnitude 0.2247 m/s? 0.1932 m/s? С. 0.2053 m/s? 0.1570 m/s? 0.2012 m/s? А. D. В. E. 0.1870 m/s? F. /--/ direction from +x axis А. 103.2° D. 108.5° В. 81.77° Е. 128.0° С. 103.1° F. 107.9°arrow_forward
- A 100-kg man stands in an elevator that starts to move from the fifth floor towards the first floor. In the initial portion of the trip, the elevator has an acceleration of 1.5 m/s2 . What is the force exerted by the floor on the man?arrow_forwardAn 80.0 kg man stands on a bathroom scale in an elevator traveling upward. What is the scale reading if the elevator is decelerating (slowing down) at a rate of 1.5 m/s²? O 784 N 508 N O 1040 N 664 N O 904 Narrow_forwardA 83.2 kg person is standing inside an elevator. The elevator is moving upward at 2.54 m/s and is decreasing speed at a rate of 1.82 m/s^2. What is the normal force that is acting on the person?arrow_forward
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