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