You walk into an elevator, step onto a scale, and push the “up” button. You recall that your normal weight is 625 N. Draw a free-body diagram. (a) When the elevator has an upward acceleration of magnitude 2.50 m/s2, what does the scale read? (b) If you hold a 3.85 kg package by a light vertical string, what will be the tension in this string when the elevator accelerates as in part (a)?
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You walk into an elevator, step onto a scale, and push the “up”
button. You recall that your normal weight is 625 N. Draw a free-body
diagram. (a) When the elevator has an upward acceleration of magnitude
2.50 m/s2, what does the scale read? (b) If you hold a 3.85 kg
package by a light vertical string, what will be the tension in this string
when the elevator accelerates as in part (a)?
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- Consider a person standing on a scale in an elevator. If the elevator accelerates upwards with an acceleration of 1.27 m/s2 and the person has a mass of 79.2 kg, what would the scale read? HINT: you need to take into account the acceleration due to gravity, as well as that of the elevator.An 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?A student attaches a rope to a 32 kg box, and drags it to the left with constant velocity of 1.97 m/s. The tension in the rope is 207 N at an angle of 35.7° to the ground. How much does the box weigh? Find the x and y components of the applied (tension) force: Fx = N. %3D Fy = N. How much friction must be present? How much Normal force must be present? N.
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