Page 36 - Science Class 6 Times Publication

b. Second class lever

The lever in which the load lies at any point in the middle of effort
and fulcrum is called second class lever. In the second class lever,
the effort distance is always greater than the load distance. Hence,
the second class lever multiplies effort more than any other class of
lever.

Wheel-barrow, nut-cracker, bottle opener, paper cutter, etc are some
examples of second class lever.

E E F L
L

L E

F F
Wheel-barrow Onion cutter Bottle opener

E
F L F
L E E L F

Nut cracker Paper cutter Mango cutter

c. Third class lever

The lever in which effort lies in the middle of load and fulcrum is
called third class lever. Such lever makes the work safe and easy.
But it cannot multiply effort because the load distance is always
greater than the effort distance.

Fire tongs, stapler, broom, shovel, shing rod, spoon, etc are the
examples of third class lever.

Times' Crucial Science and Environment 32 Book 6