Block And Tackle Model, Watch How This Simple Device Lifts Large Loads With Little Effort Using Multiple Pulleys., Each

Details:

Ull; this wooden machine has a sturdy wooden construction ideal for classroom use • this apparatus can model how the use of several pulleys increases one's mechanical advantage • students can use this both qualitatively and quantitatively and its design lends itself easily to inquiry based activites • includes an instruction manual to fascilitate student and teacher use of the apparatus • made of particle board and wooden componets. 6 5/8" By 4 3/8" base and 12 1/2" tall. Block & tackle wooden simple machines using more than one pulley