8) A 10-kg pinata is tied by a rope to the ceiling of an elevator that sits on the 5th floor of a building, 52 feetabove the ground. A 30-kg child in the elevator presses the "down" button in the elevator and the elevatoraccelerates with a downward acceleration of 2.8 m/s? for 2 seconds to achieve a downward velocity of 5.6 m/s.What is the tension in the rope during those first 2 seconds of the ride downward? [There may be moreinformation provided than is necessary to answer this question]A) 70NB) 126 NC) 56 ND) 28 NE) 520 Nbnang

Name: 8) A 10-kg pinata is tied by a rope to the ceiling of an elevator tha
Uploaded: 2022-11-23T13:49:28.000Z
Channel: Bartleby
Description: 8) A 10-kg pinata is tied by a rope to the ceiling of an elevator that sits on the 5th floor of a building, 52 feetabove the ground. A 30-kg child in the elevator presses the "down" button in the elevator and the elevatoraccelerates with a downward

The data given is as follows, 1. Mass of pinata, mp=10 kg 2. Height of the floor at which the elevator sits, h=52 ft 3. Weight of the child, mc=30 kg 4. Downwards acceleration, a=2.8 m/s2 5. Time, t=2s 6. Downward velocity, v=5.6 m/s The free body diagram is shown in the image below.The equation of motion is written in the following manner, mpg-T=mpa ......(1) The tension T acts in the upwards direction whereas weight of the hanging object acts in the downwards direction. The object accelerates downwards along with the lift. Substitute values in equation (1). 10 kg9.8 m/s2-T=10 kg2.8 m/s2T=98N-28N =70N Therefore, the correct answer is option (A).