- #1

coffeebird

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## Homework Statement

Figure 5-47 shows Atwood's machine, in which two containers are connected by a cord (of negligible mass) passing over a frictionless pulley (also of negligible mass). At time t = 0, container 1 has mass 1.30 kg and container 2 has mass 2.80 kg, but container 1 is losing mass (through a leak) at the constant rate of 0.200 kg/s. At what rate is the acceleration magnitude of the containers changing at (a) t = 0 and (b) t = 3.00 s? (c) When does the acceleration reach its maximum value?

## Homework Equations

Fnet=ma

## The Attempt at a Solution

m1= 1.30-.200t m2=2.80

Fnet(at t=0) = Tension= m1g- m2g=27.44-12.74=14.7N

acceleration of system (at t=0)= Fnet/mass= 14.7/ 4.1= 3.59 ms^2