Mechanical Advantage - Pulleys

Download/DVD: http://hilaroad.com/video/
This video uses working simple machines to demonstrate how to calculate mechanical advantage. Suitable for any school program involving simple machines. Demonstrates pulley systems including a chain block.

• Category

  Science & Technology

[Sorrow316]

amazing.... this teaches me what i learned in school that took 1 month... in 12 minutes

[rldel149]

This is a very well presented video. The use of live modeling and fixed graphics is effective. It has been presented with appeal to verbal/linguistic as well as visual/spatial. The use of the logical/mathematical test at mid point before further examination/repetition in appeal to the naturalistic (mower lifting) helps the learner gauge him/herself while providing ample opportunity to master the concept.

This is a very skilfully constructed video.

[Marie Wilson]

thank you so so much it makes so much more since now

[GalaxyDragoon423]

Thanks. Helped me on my project

[Daveed2407]

thanks alot

[Latinotechkid]

your better than my teacher, ty man

[sifisto]

I just redesigned my kayak motor pull up system after seeing this video. A goldmine in info is found here if you apply it. I'm now doing half the work!!!! Kudos, and thanks for such a great video.

[eyeshild21fan]

nooo why was this vid posred?? i understood it fine!! now my teachers making me take notes on this!! nooooo

[meruleXD]

thank you! you are so amazing!

[GRAHAMAUS]

No, it makes no difference. The pulley isn't acting as a lever, it's effectively dividing the force into two parts - half goes to the frame and the other half to the 'force in' (hand). Pulley diameters would be chosen to suit the application - total weight lifted, type of rope or cable, etc.

[Ross Martin]

Brilliant educational video. Many thanks for the help

[Nagadkcin]

No Galileo reinforced Newton's concept of gravity.