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OpenStudy (anonymous):
A 4.8 kg mass on a frictionless inclined surface is connected to a 2.1 kg mass. The pulley is massless and frictionless, and the connecting string is massless and does not stretch. The 2.1 kg mass is acted upon by an upward force of 7.5 N, and has a downward acceleration of 3.5 m/s2. The acceleration of gravity is 9.8 m/s2. What is the tension in the connecting string? Answer in units of N
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