Fysik Åk 9 | Np

Alva’s eyes lit up. "Wait, this is real physics. Let me think."

Slowly, the chest rose. When it broke the surface, Milo gasped. "It worked!" np fysik åk 9

"Lifting it too fast could snap the rope," the captain warned. " – force causes acceleration. Too much acceleration breaks things." 4. The rescue They used a hand-crank connected to a block-and-tackle. Alva felt the force in her arms. "This is mechanical advantage ," she said, sweating. "The rope pulls many times, so my force is multiplied." Alva’s eyes lit up

"That's how much energy we need to give the chest to lift it," she said. "Can't we just pull it straight up?" Milo asked. Alva’s eyes lit up. "Wait