An electric heating element is connected to a 110v circuit and a current of 3.2 a is flowing through the element. How much energ
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Answer:
<h2>3</h2>Explanation:
Using the efficiency formula. Efficiency = MA/VR * 100%
MA = Mechanical Advantage
VR = velocity ratio =
Distance moved by effort = 4.5m
distance moved by load = 1.5m
VR = 4.5/1.5 =3
Assuming efficiency is 100% (since friction can be ignored)
100% = MA/3 * 100%
1 = MA/3
MA = 3*1
MA = 3
Mechanical Advantage of the ramp is 3
The child on a swing can be modeled as a simple pendulum. The period of a simple pendulum is given by
