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$25 - $100 (2)

Block & Tackle

	Block and Tackle - Demonstration Model Product Number: SB42808M Checking pricing... Each Demonstration Model measures approximately 2-1/2 times the size of the student version and is great for classroom demonstration. One pulley can be used to change the direction of the force app... More.

	Block and Tackle Product Number: SB40354M Checking pricing... One pulley can be used to change the direction of the force applied by a cord. A small force on the cord can be use to lift a large weight. Experimenting with the device shows why lifting the block... More.

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