Use the Figure to the Right to Answer the Next

question 5

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 magnitude of the force the contact point c exerts on the ball when the applied force F just lifts the ball off the floor?

• A)mg
• B)1.5 mg
• C)1.73 mg
• D)2 mg
• E)2.14 mg