Q- A block of mass m₁ = 1 kg rests on a table with which it has a coefficient of friction 0.54. A string attached to the block passes over a pulley to a block of mass m₃ = 3 kg. The pulley is a uniform disk of mass m₂ = 0.4 kg and radius 15 cm. As the mass m₃ falls, the string does not slip on the pulley.

a) With what acceleration does the mass m₃ fall?

b) What is the tension in the horizontal string, T₁?

c) What is the tension in the vertical string, T₃?

Solution: