Engineering Board Exam Reviewer · Physics · hard
A block slides down a 30° incline with a coefficient of kinetic friction of 0.2. What is its acceleration? (g = 9.81 m/s2)
- 4.905 m/s2
- 3.206 m/s2
- 6.604 m/s2
- 2.943 m/s2
Answer
B. 3.206 m/s2
Solution
a = g( - ) = 9.81(0.5 - 0.2 × 0.866) = 3.206 m/s2.
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