Physics

A spring (k = 857 N/m) is hanging from the ceiling of an elevator, and a 5.9 kg object is attached to the lower end. By how much does the spring stretch (relative to its unstrained length) when the elevator is accelerating upward at a = 0.81 m/s2?



force= kx
mg+ma=kx
solve for a.

  1. 👍 0
  2. 👎 0
  3. 👁 94
asked by Mary
  1. Use kx=mg+ma
    857x = (5.9*9.8) + (5.9*.81)
    thus, x= .073

    1. 👍 0
    2. 👎 0
    posted by Lindsay

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A spring (k = 905 N/m) is hanging from the ceiling of an elevator, and a 4.8-kg object is attached to the lower end. By how much does the spring stretch (relative to its unstrained length) when the elevator is accelerating upward

    asked by Elle on April 25, 2014
  2. torque problem!

    A spring (k =819N/m) is hanging from the ceiling of an elevator, and a 5.1-kg object is attached to the lower end. By how much does the spring stretch (relative to its unstrained length) when the elevator is accelerating upward at

    asked by Cecilia on November 8, 2008
  3. science

    Suppose you hang an object of weight W by a string from a hanging spring scale, such as the kind used in some grocery stores. You then hang the scale with the object from the ceiling of an elevator. When the elevator is standing

    asked by Hanna on April 8, 2013
  4. physics

    An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. The spring stretches by 0.210 m. The spring is then cut into two identical springs of 50 coils each. As the drawing shows, each spring

    asked by jim on November 17, 2012
  5. physics

    The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 4.20-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the

    asked by adeola akinwekomi on March 29, 2014
  6. Physics

    a spring hanging from the ceiling. The spring constant present is 200N/m. If a mass of 50 kg is attached, how far does the spring stretch?

    asked by Daddy on October 31, 2016
  7. Physics

    A spring is attached to the ceiling of an elevator and a block of mass M is suspended from the spring. In Case A, the elevator moves up with a constant speed of 5 m/s. In Case B, the elevator moves downward with a constant speed

    asked by Anonymous on April 30, 2018
  8. Physics

    An elevator cable breaks when a 950 kg elevator is 23 m above a huge spring (k = 2.3×105 N/m) at the bottom of the shaft. (a)Calculate the work done by gravity on the elevator before it hits the spring. (b) Calculate the speed of

    asked by Sasha on November 17, 2010
  9. physics

    an object is attached to the lower end of a 100-coil spring hanging from the ceiling.the spring stretches by 0.160m. the spring is then cut into two identical springs of 50 coils each. as the drawing shows, each spring is attached

    asked by Anonymous on October 23, 2014
  10. physics

    The cable of an elevator of mass = 5320 kg snaps when the elevator is a rest at one of the floors of a skyscraper. At this point the elevator is a distance = 31.6 m above a cushioning spring whose spring constant is = 11700 N/m. A

    asked by shelby on March 7, 2008

More Similar Questions