Simple Machines Block & Tackle Acus & Sdus Each set comes in a

Each set comes in a durable

Be mission-ready with all your battle tools which are easily accessible in Rothco’s Tactical Map Case

Baskets measure 4"H x 5

i : 12 books in the set and each has been sequenced in accordance with the progression of letters and sounds

SKU: ERSSMF1U382401860-3

Simple Machines Block & Tackle Acus & Sdus Each set comes in aMPN: 005646 UPC: 895452001480 One pulley can be used to change the direction of the force applied by a cord several pulleys can be used to make this simple machine. A small force on the cord can be used to lift a large weight. Experimenting with the device shows why: lifting the block by a short distance requires that the cord be pulled a long distance. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized.