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Q: Does rowing a boat increase or decrease friction?
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What is the action and reaction in the girl rowing a boat?

The action is the girl propelling the rows in the water, and the reaction is the water pushing the boat forward.


What is an oar's fulcrum?

Imagine a giant rock, what is the most efficient way of lifting this rock (obviously without machinery)? The simple answer would be to use a lever, put the end of the bar under the rock and apply weight on the other end. The same concept applies to rowing. The blades are placed in the water (under the rock), and you pull on the blade handles (apply weight to the end of the lever/bar). The water is moved (the rock lifted) but more importantly the boat is pulled out of the water upon which it glides along. In this way the oar or a rowing boat is a lever. (as you can see rowing is a very technical sport since the rower has to understand all this and manipulate the given elements- the boat , the stroke and how they move the boat through the water-so as to be as efficient as possible and as fast as possible.


Five examples of surfaces that have very little friction between them?

There are several examples of surfaces that have little friction between them. They are water against a boat, crude oil in water, ball bearings, roller bearings, and graphite.


When you row a boat on the pond why does the boat go forward when you are pulling the oars towards you?

When you row a boat on a pond, you are usually facing the back of the boat. Also, the oars are usually attached in the middle of the oar to the side of the boat. So if you pull the handle of the oar towards the front of the boat (towards you when rowing), the paddle of the oar is moving towards the back of the boat (the oar acts like a lever-arm). To move a boat forward, you actually have to move water backward! It's pushing water back that really moves the boat forward. So, when you pull the oar towards you, the paddle moves towards the back of the boat, and that pushes water towards the back of the boat, pushing the boat the opposite direction, which is forward! Just make sure to turn around once in a while because you're not looking where you are going!


which type of friction forces are the strongest and the weakest?

sliding frictionrolling frictionstatic frictionfluid friction