there are 2 boxes sitting in an elevator. box A is sitting on top of box B. mass
ID: 2148937 • Letter: T
Question
there are 2 boxes sitting in an elevator. box A is sitting on top of box B. mass of box A is 20kg and mass of box B is 10 kg. the mass of the elevator they are sitting in is 100kg. the elevator is being pulled upward by a rope at an acceleration of 1 m/s2.1. determine the force of box B on box A.
2. determine the force of box B on the elevator.
3. if the boxes sat on a scale that measures in kg, what would the reading of the scale by when the elevator was stationary and when the elevator was accelerating upward at 1 m/s
Explanation / Answer
a)F=20(9.8+1)=216 N b)F=30(9.8+1)=324 N 3) when it is stationary than 30kg when it is moving upward =30*10.8/9.8=33.06 kg
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