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Theoretical Rope and Pulley Question

  • Thread starter qszwdxefc
  • Start date
  • #1
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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.
 

Answers and Replies

  • #2
ideasrule
Homework Helper
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Consider a movable pulley.
 
  • #3
277
1
Does "block and tackle" sound familiar?
 
  • #4
10
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the only pulley system we have learned about is the atwood machine (weight connected to person through 1 pulley)
 
  • #5
430
2
Instead of hanging blocks you could attach another pulley to a pulley.
 

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