delvin7698
16.12.2019 •
Physics
Asmall child (m=40kg) is standing on a scale in an elevator. answer the following questions about the forces acting on the boy for each situation.
a. the elevator is moving at a constant velocity of 14m/s. how does the normal force compare to the weight? why?
b. the elevator is accelerating upward at 5m/s^2. how does the normal force compare to the weight? why?
c. the elevator is accelerating down at 5m/s^2. how does the normal force compare to the weight? why?
d. the elevator is accelerating down at 10m/s^2 (equal to the acceleration due to gravity.) what is the normal force? why?
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Ответ:
Its a 12
Step-by-step explanation: