Theoretical Rope and Pulley Question

[qszwdxefc]

Homework Statement

Demonstrate using free body diagrams and equations that, using the same force, a heavier load can be lifted with a rope and pulley system than with a rope alone.

2. The attempt at a solution

To lift something off the ground without a pulley, the applied force must be greater than the gravitational force.

With a pulley, the force you apply still must be great, but the pulley just changes the direction of the force/motion??

Thanks.

 

[ideasrule]

Consider a movable pulley.

 

[PhaseShifter]

Does "block and tackle" sound familiar?

 

[qszwdxefc]

the only pulley system we have learned about is the atwood machine (weight connected to person through 1 pulley)

 

[aim1732]

Instead of hanging blocks you could attach another pulley to a pulley.