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c. the elevator is moving downward at a constant velocity of 2.0 m/s. (19 600 N) d. the elevator is accelerating upward at 1.0 m/s2. (21 600 N) e. the elevator is accelerating downward at 1.0 m/s2. (17 600 N) 6. A man measures the acceleration of an elevator by using a spring scale. He fastens the scale to the roof, and suspends a mass from it. If the scale reads 98 N when the elevator is at rest,

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Calculate the scale reading: (a) if the elevator accelerates upward at a rate of 1.20 m/s 2, and (b) if the elevator moves upward at a constant speed of 1 m/s. Figure 3. (a) The various forces acting when a person stands on a bathroom scale in an elevator.

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Starting from rest, the elevator ascends, attaining its maximum speed of 1.08 m/s in 0.900 s. It travels with this constant speed for the next 5.00 s. The elevator then undergoes a uniform acceleration in the negative y direction for 1.70 s and comes to rest.

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6. A 55 kg student stands on a bathroom scale in an elevator of total mass 7.0 X 10 2 kg that is accelerating upward at 1.5 m/s 2. a) What is the tension in the cable that is pulling the elevator up? b) What would the student’s apparent weight be in the elevator (i.e. the reading on the scale)? For the Air the Earth wouldnt move, and for the Earth the Air wouldnt move, since they would run at the same velocity. But since they have separate motions and one doesnt carry the other, for an observer upon the Earth it would be 1030mph rotating wind at the equator.

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8) A 615 N student standing on a scale in an elevator notices that the scale reads 645 N. From this information, the student knows that the elevator must be moving upward. 8) 9) A box of mass m is pulled with a constant acceleration a along a horizontal frictionless floor by a wire that makes an angle of 15 degrees above the horizontal.

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Jul 10, 2012 · When the elevator is descending at constant speed there is no force applied on the person and the net acceleration is zero. As a result the force exerted on the scale is M*0 = 0 N. 38. A 1500 kg elevator moves up and down on a cable. Calculate the tension in the cable for the following cases: a. The elevator moves at constant speed upward b. The elevator moves at constant speed downward c. The elevator accelerates upward at a constant rate of 1.2 m/s d. The elevator accelerates downward at a constant rate of 1.2 m/s 2 2 39.