Relier Pairs LET'S SIMPLE MACHINESVersion en ligne Know machines and ttheir function. par maria backer baraza 1 We use wheel and axle 2 We use lever 3 We use a wedge 4 We use a pulley 5 We use gears 6 We use an inclined plane 7 We use screw to change the direction of movement and/or increase the output speed or torque. to hold objects together — such as wood — and to position objects. to cut objects. to push objects up or down. to move or lift objects. to lift objects. to reduce friction of the moving vehicle with the ground.
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