Help Physics

posted by .

A child with a mass of 39 kg stands on a spring scale inside an elevator. For each of the scenarios below, draw a force diagram of the forces acting on the child and calculate the reading of the scale in newtons.

(a) The elevator is at rest.

_______ N

(b) The elevator is accelerating downward at 1 m/s2.

_______ N

(c) The elevator is moving upward at a constant velocity of 9 m/s.

________N

(d) The elevator is accelerating upward at 3 m/s2.

_______ N

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    What are the forces acting on an elevator as it moves from rest upward and stops at its floor. Discuss the forces including tension force (on cable or string), gravitational force, and net force when an elevator is at rest. Which law …
  2. physics

    Jana investigates the movement of a lift by placing an apple with a mass of 100 g on a Newton scale. During the first 3 seconds of movenent the scale registers a reading of 1,2 N. Over the next 5 seconds it registers 0,98 N and for …
  3. physics

    You measure your weight by stepping on a spring scale inside an elevator. If elevator accelerates either upward or downward, the spring scale gives a reading different from your weight. a) Calculate how much a 70 kg person weigh a) …
  4. Physics

    A child's pogo stick stores energy in a spring with a force constant of 2.5×104N/m. At position A, the spring compression is a maximum and the child is momentarily at rest. At position B, the spring is in its equilibrium position …
  5. Grade 12 physics

    At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24°E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on …
  6. PHYSICS

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical …
  7. Physics

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical …
  8. AP Physics

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical …
  9. physics

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical …
  10. Physics (Attempt 3 for help)

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical …

More Similar Questions