Answer Happy

2.
Three astronauts, propelled by jet backpacks, push and guide a 137 kg asteroid toward a processing dock, exerting the forces shown in the figure, with F1 = 31 N, F2 = 58 N, F3 = 43 N, 01 = 30°, and 3 = 60°. What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x axis in the range of (-180°, 180°]) of the asteroid's acceleration?

(a) A 1.24 kg salami is supported by a cord that runs to a spring scale, which is supported by another cord from the ceiling (see Figure (a)). What is the reading on the scale, which is marked in weight units? (b) In Figure (b) the salami is supported by a cord that runs around a pulley and to a scale. The opposite end of the scale is attached by a cord to a wall. What is the reading on the scale? (c) In Figure (c) the wall has been replaced with a second 1.24 kg salami on the left, and the assembly is stationary. What is the reading on the scale now? Spring scale Spring scale Spring scale