felipeneeds684
06.11.2020 •
Physics
The diagram above shows a top-down view of two kids dragging a box by pulling on ropes attached to the box. Kid A pulls with a force of 17 N in a direction of 52° as defined by θA shown in the picture above. The box has a mass of 38 kg and accelerates in the positive y direction with a magnitude of 1.35 m/s2. The acceleration vector for the box has an x component of zero meters per second squared. What is angular direction that Kid B pulls on their rope? Your answer should be consistent with the arc that defines θB in the diagram above.
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Ответ:
Explanation:
Power = Force * distance/time
Given
mass = 55kg
Force = 55 * 10 = 550N
Let the distance covered be 8m
time taken = 5secs
Required
Amount of Power used
Power = 550 * 8/5
Power = 110 * 8
Power = 880 Watts
2) The way he can reduce the amount of power expended is to reduce the amount of stairs or the distance covered in a specified period of time.