Part A) A pulley is massless and frictionless. The masses 3 kg, 3 kg, and 7 kg are suspended as in the figure. What is the tension T1 in the string between the two blocks on the left-hand side of the pulley?
The acceleration of gravity is 9.8 m/s^2.
Answer in units of N.
Part B) What is the magnitude of the acceleration of the lower left-hand block?
![Part A A pulley is massless and frictionless The masses 3 kg 3 kg and 7 kg are suspended as in the figure What is the tension T1 in the string between the two b class=](https://us-static.z-dn.net/files/db3/d33b0d8db24473129efeb8c700741d7f.png)