Mechanical ComprehensionCâu 99 / 120
In a class-one lever, the fulcrum is located:
a.at the load end only
b.at the effort end only
c.between the effort and the load
d.outside the lever
Giải thích
A class-one lever, such as a seesaw, has its fulcrum between the effort and the load. A crowbar prying a nail is another common example.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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