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Dobrý deň
Chcem sa opýtať či je odpoveď správna
180-75=105
Ďakujem
Aké zaťaženie musí vydržať lano kabíny výťahu, ktorý pri celkovej hmotnosti 1600 kg má dosiahnuť za 5 s z pokoja rýchlosť 12 m·s-1 smerom nahor?
Vagón s hmotnosťou 12 t sa pohybuje po priamej trati rýchlosťou 1,8 m·s-1anarazí do stojaceho vagóna s hmotnosťou 8 t. Pri náraze sa vagóny spoja. Akou veľkou spoločnou rýchlosťou v sa budú vagóny…
doučma.sk
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