📅 NSB 2017🎓 HS🔄 Round 5#️⃣ Q19🌟 BONUS✍️ Short Answer
Identify all of the following 3 classes of levers that are capable of producing a mechanical advantage greater than unity: 1) Class 1; 2) Class 2; 3) Class 3.
✔️Answer:1 AND 2
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