question_answer

A pulley has a light rope running over it, with a 10 N weight on one side and a 20 N weight on the other. Ropes always pull with equal force on each end; this is called tension. If the masses are allowed to fall, what is the tension, T in the rope?

A) 0 N                              

B) \[1N<T<10N\]

C) 10 N                            

D) None of these.