Engineering Board Exam Reviewer · Engineering Mechanics · hard
A 12 kg block slides down a 30° incline with a coefficient of kinetic friction of 0.18. What is the block's acceleration down the incline? (g = 9.81 m/s2)
- 4.9
- 6.43
- 1.77
- 3.38
Answer
D. 3.38
Solution
a = g( - ) = 9.81( 30° - 0.18 30°) = 3.38 m/s2.
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