A pulley is massless and frictionless. A massless inextensible string is attached to these masses: m3 = m, m2 = m, and m1 = 4 m.

What is the tension T3 in the string connecting the two objects of equal mass? Answer in the format T3=(?)mg.

What is the magnitude of the net force on mass m3 where m1 > m3 + m2 , m3 > m2, and a is the magnitude of the acceleration of

the masses. Pick one below:

1. Fnet = (m3) a

2. Fnet = (m3-m2) a

3. Fnet = (m3-m2)g

4. Fnet = (m2) g

5. Fnet = (m2) a

6. Fnet = (m1-m3)g

7. Fnet = (m1) g

8. Fnet = (m1-m3) a

9. Fnet = (m3) g

10. Fnet = (m1) a

M 7