Engineering Board Exam Reviewer · Engineering Mechanics · medium
Two masses, 10 kg and 6 kg, are connected by a light inextensible string over a frictionless, massless pulley (an Atwood machine). What is the magnitude of the system's acceleration? (g = 9.81 m/s2)
- 2.45
- 39.24
- 9.81
- 2.65
Answer
A. 2.45
Solution
For an Atwood machine: a = (m1 - m2)g / (m1 + m2) = (10 - 6)(9.81) / (10 + 6) = 2.45 m/s2.
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