Mechanical Comprehension第 103 / 120 题
Increasing the length of a lever's effort arm will:
a.decrease the force output
b.have no effect
c.increase the mechanical advantage
d.reduce the load
解析
A longer effort arm gives more leverage, increasing the mechanical advantage. This lets a smaller effort force lift a larger load.
免费刷完整 120 道题库 — 无需注册。
同考点相关题目
- Two gears mesh together. If the driving gear turns clockwise, the driven gear will turn:
- A smaller gear driving a larger gear will cause the larger gear to turn:
- Which object has the most gravitational potential energy?
- Air pressure is greatest at:
- A wedge is used to:
- When a compressed spring is released, the stored energy is converted mainly into: