Actual Mechanical Advantage(AMA) = Weight / Force
Here, Weight = 764 N
Force = 255 N
Substitute the values in to the expression,
AMA = 764 / 255
AMA = 2.99
After rounding-off to the nearest tenth value, it would be 3
Finally, option C would be your answer.
Hope this helps!
We have that the instantaneous power is

From the question we are told that
A 60 kg person runs up a 30° ramp
distance of 15 m up the ramp in 5.8 s.
t = 4.0 s?
Generally the equation for the Force is mathematically given as

Where

Therefore

Where

Now


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By using the equation speed = distance/time we can solve for distance. The speed is 4 m/s and the time is 12 seconds. We need to rearrange the equation to Speed * Time = distance. 4(12) = 48; 48 = distance. The cliff is 48 meters high.
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