A first-class lever is a lever in which the fulcrum is located in between the effort and the load. This is the lever that you think of whenever you think of levers.
a can opener
a hammer
a see-saw
E
E L L
F
a pair of pliers
L
a pair of scissors
nails clipper
F L
F E
E
E
E
F
E
F
E
F
(when it’s used to pull nails)
L
L
E
The second-class lever is a little strange. In a second-class lever, the load is between the fulcrum and the effort.
a paper cutter
L
a wheel-barrow
F
E
E
L F F
F
a nut-cracker
L
L
E
E
E
L
a bottle opener
E
This fellow is the oddest of all. The thirdclass lever has the effort between the load and the fulcrum. a broom
Science Notes Year 6 - Unit 7 Machines (Levers).pdf
Page 1 of 2. 3 Classes of Levers. F. 1. L. 2. E. 3. a can opener. a pair of pliers. A first-class lever is a lever in which the fulcrum is. located in between the effort ...
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Page 1 of 1. Middle School Programs. Building Healthy Core Learning. Math 6 Plus, Unit 7. Math 6 Plus UNIT 7 OVERVIEW: Equations and Inequalities. Unit Outcomes. At the end of this unit, your student should be able to: Key Vocabulary. Terms to deepen
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A sledgehammer is used to drive a wedge into a log to split it. When the wedge is driven 0.2 m into. the log, the log is separated by a distance of 5 cm. A force of 19000 N is needed to split the log and the. sledgehammer exerts a force of 9800 N. a.
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