Two crates of mass m₁= 15 kg and m₂= 9.0 kg are connected by a rope that passes over a frictionless pulley of mass m_p= 8.0 kg and radius 0.20 m as shown inFigure P9.14. 

(a) What force(s) can do work on the masses and the pulley? 

(b) Identify a system whose mechanical energy will be conserved. 

(c) The crates are released from rest. Crate 1 falls a distance of 2.0 m, at which time its speed is v_f. Make a sketch showing the initial and final states of the system. 

(d) What are the total initial and final kinetic energies of the system? Express your answers in terms of v_f. 

(e) What are the initial and final potential energies of the system? 

(f) What is the final speed v_f of the crates? 

(g) What is the final angular velocity of the pulley?

Transcribed Image Text:

moulley m1 m2