1a. a box of dirty money (mass m1 = 3.5 kg) on a frictionless plane inclined at angle θ1 = 37°. The box is connected via a cord of negligible mass to a box of laundered money (mass m2 = 1.3 kg) on a frictionless plane inclined at angle θ2 = 54°. The pulley is frictionless and has negligible mass. What is the tension in the cord?
1b. three blocks attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; the masses are mA = 7.00 kg, mB = 9.30 kg, and mC = 15.0 kg. When the blocks are released, what is the tension in the cord at the right? Use g=9.80 m/s2.
1c. A 3 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 2 m + (3 m/s)t + ct2 - (2 m/s3)t3 with x in meters and t in seconds.The factor c is a constant. At t = 4 s the force on the particle has a magnitude of 30 N and is in the negative direction of the axis. What is c?
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