a 1.00-kg object b is connected with a string to a 2.00-kg object a, which is connected with a second string over a massless, frictionless pulley to a 4.00-kg object c. the strings have negligible mass and do not stretch, and the level tabletop is frictionless.

Given: m∠apc = 27°, m dc = 27° find: m ab

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