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