Find the magnitude of the frictional force acting shell


Question:

1) A hollow spherical shell with mass 1.95 kg rolls without slipping down a slope that makes an angle of 38.0 with the horizontal.

Find the magnitude of the acceleration acm of the center of mass of the spherical shell.
Find the magnitude of the frictional force acting on the spherical shell.

2) An arrow is aimed horizontally, directly at the center of a target 20 m away. The arrow hits 0.050 m below the center of the target. Neglecting air resistance, what was the initial speed of the arrow?

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Accounting Basics: Find the magnitude of the frictional force acting shell
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