Use the Figure to the Right to Answer the Next

question 49

Multiple Choice

Use the figure to the right to answer the next problem.
A ball of mass m and radius r is placed next to a step of height ½ r.
-What is the force F needed to just lift the ball off the floor?

• A)0.5 mg
• B)1.41 mg
• C)1.73 mg
• D)mg
• E)None of these is correct.

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