Daim ntawv ceeb toom ntawm loaded movable pulleys

Nco tseg:
Thaum siv cov bearing pulley, nws yog ib qho tsim nyog los xyuas kom meej tias qhov zoo ntawm lub pulley thiab hlua yog txhim khu kev qha kom tsis txhob muaj teeb meem kev nyab xeeb los ntawm cov teeb meem zoo.
Pulleys thiab hlua yuav tsum tau kuaj xyuas thiab tswj xyuas tsis tu ncua kom ntseeg tau tias lawv ua haujlwm zoo.
Thaum lub sijhawm ua haujlwm nqa, nws yuav tsum tau ua raws li cov txheej txheem kev nyab xeeb kom ruaj ntseg ntawm cov neeg ua haujlwm thiab cov khoom siv.