https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:force-and-motion/xd6642c7f392cd435:simple-machines/v/simple-machines-making-work-easier 2026-07-02T12:10:59.912898911Z Simple Machines: Making Work Easier Simple Machines making Work Easier Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Simple Machines: Making Work Easier Simple Machines making Work Easier https://cdn.kastatic.org/ka-youtube-converted/nqwsg83IGf0.mp4/nqwsg83IGf0.mp4 141 Simple machines https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:forces/x0e04e0cb682fb793:turning-effect-of-a-force/v/intro-to-levers-simple-machine-middle-school-science-khan-academy-1080p 2026-05-11T04:40:42.021307954Z Intro to Levers Simple Machines Intro to Levers Simple Machines Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Intro to Levers Simple Machines Intro to Levers Simple Machines https://cdn.kastatic.org/ka-youtube-converted/YtxniGaAfss.mp4/YtxniGaAfss.mp4 280 Simple machines https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:force-and-motion/xd6642c7f392cd435:simple-machines/e/simple-machines-lever 2026-07-02T12:10:59.912898911Z Simple Machines: Lever Simple Machines: Lever Asma Rouf exercise https://www.khanacademy.org/science/grade-4-science-pakistan-national-curriculum/xd6642c7f392cd435:force-and-motion/xd6642c7f392cd435:simple-machines/e/simple-machines-pulley-gears-and-ramps 2026-07-02T12:10:59.912898911Z Simple Machines: Pulley, Gears and Ramps Simple Machines: Pulley, Gears and Ramps Asma Rouf exercise