Question #6ab05

1 Answer
Dec 16, 2016

Second class.


Whether it is a boat oar, resting in a oar lock or a boat paddle, resting in hand both are levers are of the same kind.

Photo showing an oar.

Photo of a hand held paddle.

Anatomy of a boat paddle.

As shown in middle picture, the weight of the paddle rests in one hand.
Blade dipped in water, acts as fulcrum.
Effort is applied at the top grip point by pushing it forward. The boat moves forward. Blade comes out of water as the boat moves and is dipped back into the water to provide a new fulcrum.

As per definition, weight being in the middle, it is lever of second class.