Relacionar Columnas LET'S SIMPLE MACHINESVersión en línea Know machines and ttheir function. por maria backer baraza 1 We use lever 2 We use a pulley 3 We use a wedge 4 We use an inclined plane 5 We use screw 6 We use wheel and axle 7 We use gears to reduce friction of the moving vehicle with the ground. to lift objects. to push objects up or down. to cut objects. 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 move or lift objects.