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queenspublic
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Homework Statement
A figure shows two blocks connected by a cord that passes over a frictionless pulley. The arrangement is known as Atwood's machine. Block 1 has mass m1 = 1.30 kg; block 2 has mass m2 = 2.80 kg.
Sorry, no picture.
What is the magnitude of the acceleration of the blocks?
Homework Equations
T = 1.3a + 12.7 N
T = -2.8a + 27.4 N
The Attempt at a Solution
The answer is 3.58 m/s^2 but why and how?