A box of mass m hangs by a stringfrom the ceiling of an elevator that is acceleratingupward.

1)Which of the following bestdescribes the tension T in the string?

T < mg

T = mg

T > mg

2) A block sits at rest on a horizontal frictionless surface.Which of the follwoing sketches most closely resembles the correctfree body diagram for all forces acting on the block. Each redarrow represents a force.

A,B,C, or D?

3)Briefly describe the forces represented by each of the arrowsin your choice for the above question.

m