Question

38. An elevator containing three passengers (with a mass of 72 kg, 84 kg, and 35 kg, respectively) has a combined mass of 1030 kg. The cable attached to the elevator exerts an upward force of 1.20 x 10^4 N, but friction opposing the motion of the elevator is 1.40 x 10^3 N. a) Draw a free-body diagram of all of the forces acting on the elevator. b) Calculate the net acceleration of the elevator and its passengers. c) Draw a free-body diagram of all of the forces acting on the 35 kg passenger. d) Calculate the force normal acting on this passenger. e) What velocity will the elevator have 12.0 s after the passengers have entered the elevator?

          38. An elevator containing three passengers (with a mass of 72 kg, 84 kg, and 35 kg, respectively) has a combined mass of 1030 kg. The cable attached to the elevator exerts an upward force of 1.20 x 10^4 N, but friction opposing the motion of the elevator is 1.40 x 10^3 N.

a) Draw a free-body diagram of all of the forces acting on the elevator.

b) Calculate the net acceleration of the elevator and its passengers.

c) Draw a free-body diagram of all of the forces acting on the 35 kg passenger.

d) Calculate the force normal acting on this passenger.

e) What velocity will the elevator have 12.0 s after the passengers have entered the elevator?

38. An elevator containing three passengers (with a mass of 72 kg, 84 kg, and 35 kg, respectively) has a combined mass of 1030 kg. The cable attached to the elevator exerts an upward force of 1.20 x 10^4 N, but friction opposing the motion of the elevator is 1.40 x 10^3 N.

a) Draw a free-body diagram of all of the forces acting on the elevator.

b) Calculate the net acceleration of the elevator and its passengers.

c) Draw a free-body diagram of all of the forces acting on the 35 kg passenger.

d) Calculate the force normal acting on this passenger.

e) What velocity will the elevator have 12.0 s after the passengers have entered the elevator?

Added by Jared C.

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