動かす
うごかす · ugokasu · JLPT N3 · verb-godan
to move
📦 動 = heavy 重 + power 力: shifting something heavy takes force
動く (ugoku) means something moves by itself. Swap -ku for -kasu and it becomes 動かす: you make it move. The same pattern turns 乾く (to dry) into 乾かす (to dry something).