physics

posted by .

find the tension in an elevator cable which must support a 4000 N elevator with a maximum upward acceleration of 2 g's. What would be the tension if the elevator were allowed to accelerate downward at .25g's?

  • physics -

    Upwards:
    -ma = mg –T1,
    T1 = m(g+a).
    Downwards:
    ma = mg –T2,
    T2 =m(g-a).

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A loaded elevator with very worn cables has a total mass of 3000 kg, and the cables can withstand a maximum total tension of 40,000 N. (a) What is the maximum upward acceleration for the elevator if the cables are not to break?
  2. Physics

    An empty elevator of mass 2.7x10^2kg is pulled upward by a cable at an acceleration of 1.2m/s. What is the tension in the cable?
  3. Physics

    An elevator in a tall building is allowed to reach a maximum speed of 3.3 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 3.4 m if the elevator has a mass of 1330 kg including occupants?
  4. physics

    An elevator is being lifted up an elevator shaft at a constant speed by a steel cable. All fricional effects are negligible. In this situation,forces on the elevator are such that?
  5. Physics

    While an elevator of mass 2681 kg moves upward, the tension in the cable is 29.4 kN. (a) What is the acceleration of the elevator?
  6. PHYSICSSS

    While an elevator of mass 2681 kg moves upward, the tension in the cable is 29.4 kN. (a) What is the acceleration of the elevator?
  7. physics

    a 3200-lb elevator cab is supported by a cable in which the maximum safe tension is 4000 lb. (a)what is the greatest upward acceleration the elevator cab can have?
  8. physics

    An elevator in a tall building is allowed to reach a maximum speed of 3.61 m/s going down. What must the tension be in the cable to stop this elevator over a duration of 3 seconds if the elevator has a mass of 1370 kg including occupants?
  9. physics

    1- An elevator, when fully loaded, has a mass of 5500 kg. The elevator needs to accelerate anywhere from 2.7 m/s^2 [D] to 2.7 m/s^2 [U]. What is the maximum tension force that the elevator cable will need to support during normal use?
  10. Physics

    An elevator in a tall building is allowed to reach a maximum speed of 3.55 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 2.30 m if the elevator has a mass of 1270 kg including occupants?

More Similar Questions