Use the figure to answer the next question. A light rope runs through two frictionless pulleys of negligible mass. A mass, m, is hung from one of the pulleys and a force, F is applied to one end of the rope so that the mass moves at a constant speed.
-What is the force needed to move the mass at a constant speed?
A) 0
B) mg
C) mg
D) 2mg
E) 4mg

Question

Use the figure to answer the next question. A light rope runs through two frictionless pulleys of negligible mass. A mass, m, is hung from one of the pulleys and a force, F is applied to one end of the rope so that the mass moves at a constant speed. 
-What is the force needed to move the mass at a constant speed?
A) 0 
B) mg 
C) mg 
D) 2mg 
E) 4mg

Quizplus · Accepted Answer

The Answer of Use the figure to answer the next question. A light rope runs through two frictionless pulleys of negligible mass. A mass, m, is hung from one of the pulleys and a force, F is applied to one end of the rope so that the mass moves at a constant speed. 
-What is the force needed to move the mass at a constant speed?
A) 0 
B) mg 
C) mg 
D) 2mg 
E) 4mg

Use the Figure to Answer the Next Question