An elevator is pulled upward so it moves with increasing upward speed?the force exerted by the...
An elevator is pulled upward so it moves with increasing upward
speed?the force exerted by the cable on the elevator is constant
and greater than the downward gravitational force exerted by Earth.
When the elevator is moving up medium-fast, the force exerted by
the cable on the elevator changes abruptly to just balance the
downward gravitational force of Earth?the sum of the forces that
the cable and Earth exert on the elevator is now zero.
Homework Answers
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An elevator is pulled upward so it moves with increasing upward
speed?the force exerted by the...
An elevator is being lifted up an elevator shaft at a constant speed by a steel...
An elevator is being lifted up an elevator shaft at a constant speed by a steel cable as shown in the figure. Assume that all frictional forces can be ignored. In this situation, forces on the elevator are such that: steel cable elevator going up at constant speed o the upward force by the cable is greater than the downward force of gravity. the upward force by the cable is equal to the downward force of gravity. the upward force...
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the d...
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is greater, T or w? T w Both forces are equal. (b) When the elevator is moving at a constant velocity upward, which is greater, T or w? T w Both forces are equal. (c) When the elevator is moving upward, but the acceleration...
(a) An elevator of mass m moving upward has two forces acting on it: the upward...
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is greater, T or w? Tw Both forces are equal. (b) When the elevator is moving at a constant velocity upward, which is greater, T or w? Tw Both forces are equal. (c) When the elevator is moving upward, but the acceleration is downward, which is...
An elevator car with a mass of equal to 800 kg is pulled upward at constant...
An elevator car with a mass of equal to 800 kg is pulled upward at constant speed. If the elevator moves a distance of 5m, how much work was done by the cable which pulls upward on the elevalor through that distance. 12 vg40000 The cable does no work, because there is no change in kinetic energy B. The cable does 40,000 J of work, because it must be equal to gain in potential energy The cable does more than...
Question 4 Part A Predict how the upward force exerted on the feet by the scale...
Question 4 Part A Predict how the upward force exerted on the feet by the scale will compare to the weight of the man if the elevator is moving upward at a constant speed. The upward force on the feet will be equal to the man’s weight. The upward force on the feet will exceed the man’s weight. The upward force on the feet will be less than the man’s weight. Part B Predict how the upward force exerted on...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight of the passenger is 650N. 1. a. What are the reaction forces to these two forces? b. Find the acceleration of the passenger. A toboggan loaded with students (total weight w) slides down a snow-covered hill that slopes at constant angle α. There is virtually no friction, what is its acceleration? A highway curve with radius R is to be banked so that a...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight of the passenger is 650N. 1. a. What are the reaction forces to these two forces? b. Find the acceleration of the passenger A toboggan loaded with students (total weight w) slides down a snow-covered hill that slopes at constant angle α. There is virtually no friction, what is its acceleration? A highway curve with radius R is to be banked so that a...
-14 points GPHYSO2 6.PP.13. Your mass is 50 kg. You stand on a bathroom scale in...
-14 points GPHYSO2 6.PP.13. Your mass is 50 kg. You stand on a bathroom scale in an elevator on Earth. (a) What force would the scale exert wherf the elevator moves up at a constant speed? (b) What force would the scale exert when it slows at 1.8 m/s2 while moving upward? (c) What force would the scale exert when it speeds up at 1.8 m/s2 wile moving downward? N (d) What force would the scale exert when it moves...
An object is hanging by a string from the ceiling of an elevator. The elevator is moving upward with a constant speed....
An object is hanging by a string from the ceiling of an elevator. The elevator is moving upward with a constant speed. What is the magnitude of the tension in the string? The magnitude of the tension in the string is equal to the magnitude of the weight of the object. The magnitude of the tension in the string is less than the magnitude of the weight of the object. The tension in the string cannot be determined without knowing...
Consider the block arrangement for the following situations: (a) Block moving upward at constant speed (b) Block moving...
Consider the block arrangement for the following situations: (a)
Block moving upward at constant speed (b) Block moving downward at
constant speed (c) Block moving upward, speed decreasing (d) Block
moving upward, speed increasing (e) Block stationary
it was like that
i dont understand the question. help.
Example 5.2.1 Sample Problem Block accelerating vertically This first figure shows a vertically moving block on the end of a cord. Example 5.2.1 Figure 1 This second figure gives the vertical velocity component...
An elevator is being lifted up an elevator shaft at a constant speed by a steel cable as shown in the figure. Assume that all frictional forces can be ignored. In this situation, forces on the elevator are such that: steel cable elevator going up at constant speed o the upward force by the cable is greater than the downward force of gravity. the upward force by the cable is equal to the downward force of gravity. the upward force...
An elevator car with a mass of equal to 800 kg is pulled upward at constant speed. If the elevator moves a distance of 5m, how much work was done by the cable which pulls upward on the elevalor through that distance. 12 vg40000 The cable does no work, because there is no change in kinetic energy B. The cable does 40,000 J of work, because it must be equal to gain in potential energy The cable does more than...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight of the passenger is 650N. 1. a. What are the reaction forces to these two forces? b. Find the acceleration of the passenger. A toboggan loaded with students (total weight w) slides down a snow-covered hill that slopes at constant angle α. There is virtually no friction, what is its acceleration? A highway curve with radius R is to be banked so that a...
The upward normal force exerted by the floor on an elevator passenger is 620N. The weight of the passenger is 650N. 1. a. What are the reaction forces to these two forces? b. Find the acceleration of the passenger A toboggan loaded with students (total weight w) slides down a snow-covered hill that slopes at constant angle α. There is virtually no friction, what is its acceleration? A highway curve with radius R is to be banked so that a...
-14 points GPHYSO2 6.PP.13. Your mass is 50 kg. You stand on a bathroom scale in an elevator on Earth. (a) What force would the scale exert wherf the elevator moves up at a constant speed? (b) What force would the scale exert when it slows at 1.8 m/s2 while moving upward? (c) What force would the scale exert when it speeds up at 1.8 m/s2 wile moving downward? N (d) What force would the scale exert when it moves...
Consider the block arrangement for the following situations: (a)
Block moving upward at constant speed (b) Block moving downward at
constant speed (c) Block moving upward, speed decreasing (d) Block
moving upward, speed increasing (e) Block stationary
it was like that
i dont understand the question. help.
Example 5.2.1 Sample Problem Block accelerating vertically This first figure shows a vertically moving block on the end of a cord. Example 5.2.1 Figure 1 This second figure gives the vertical velocity component...
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