A golf club hits a 0.04551 kg golf ball off a golf tee. The club is in contact with the ball for 0.020 s, and the force applied
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The ideal mechanical advantage of a slope is given by the ratio between the output load, which is simply the weight of the object (
), and the input force 
applied to move the object along the slope:
The energy conservation law states that the potential energy of the object when it reaches the final height h is equal to the work done to move the object along the distance of the slope
, i.e.
From this we find
Therefore, we can substitute this into the formula of the ideal mechanical advantage and calculate its value:
The energy conservation law states that the potential energy of the object when it reaches the final height h is equal to the work done to move the object along the distance of the slope
From this we find
Therefore, we can substitute this into the formula of the ideal mechanical advantage and calculate its value: