A ground-fault circuit interrupter shuts down a circuit if it?
1 answer:
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Answer:
Making the crossing gate balanced makes the mechanical drive simpler and less expensive to operate.
Explanation:
See the attachment for a picture of what we're talking about.
The gate must be rotated up and down. That rotation is easier if the mass being rotated is balanced about the center of rotation. Less torque (and work) is required to create the desired motion.
Answer:
W = 750 [J]
Explanation:
The question should be related to work, work in physics is defined as the product of force by distance. In this way, we can use the following equation.
where:
F = force = 30 [N]
d = distance = 25 [m]
W = work [J]
Now replacing: