Simple machines: Pulleys
24:19
Lever Problems Made Simple
16:31
Why Snatch Blocks are AWESOME (How Pulleys Work) - Smarter Every Day 228
7:15
Multiplicador de Força - Sistema de Polias Móveis - Talha Exponencial
15:53
How Levers, Pulleys and Gears Work
5:52
Mechanical Engineering: Particle Equilibrium (11 of 19) Why are Pulleys a Mechanical Advantage?
14:57
Pulling Trees Down With Rope
7:07
Rope and Pulley Systems: Segment 6 - The Block and Tackle - 4:1 and 5:1.pds.m2ts
13:12