Question 10: The two masses (m1-5 kg. m2-2.5 kg), shown in the figure beside, are released from rest, with ml At a height of 0.75 m above the floor. When ml hits the ground its speed is 1.5 m/s. Assuming that the pulley is a Uniform disk of radius r in cm, with a mass of 4.5 kg and that you can ignore all kinds of friction. The moment of inertia of a disk is/=.m. r². a) Give the expression and valuate the amount of the mechanical Energy when the mass ml starts moving down. b) Using the principle of conservation of energy calculate the rotational kinetic energy of the pulley. e) What is the radius of the pulley? m₁

Question 10: The two masses (m1-5 kg. m2-2.5 kg), shown in the figure beside, are released from rest, with ml At a height of 0.75 m above the floor. When ml hits the ground its speed is 1.5 m/s. Assuming that the pulley is a Uniform disk of radius r in cm, with a mass of 4.5 kg and that you can ignore all kinds of friction. The moment of inertia of a disk is/=.m. r². a) Give the expression and valuate the amount of the mechanical Energy when the mass ml starts moving down. b) Using the principle of conservation of energy calculate the rotational kinetic energy of the pulley. e) What is the radius of the pulley? m₁