# Comparing Areas

Calculate AREA of Shape 1 then calculate the area of Re-arranged Shape 1. Did you get the same result? Why are they different?

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1. A 68 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15 degrees above the horizontal. (a) If the coefficient of static friction is 0.50, what minimum force magnitude is required from the rope to start the crate moving ? (b) If the friction is 0.35, what is the magnitude of the initial acceleration of the crate ?

2. A loaded penguin sled weighing 80 Newton's rests on a plane at 20 degree's to the horizontal. Between the sled and the plane the coefficient of static friction is 0.25 and the coefficient of friction is 0.15. (a) What is the minimum magnitude of the force F. parallel to the plane, ...

#### Solution Summary

The expert compares the areas of rearranged functions. Graph functions are calculated.