How do gears help us?

Question

I Have a class project to see how gears help in man made things so as human anbody now how they help uss???

HELP!!!!!!!!!!!

Answer 1

They help everything. Just have a look around and you will see. Usually anything that moves uses a gear at some point. It makes us be able to lift heavy objects, it allows motors to be able to pull more, it slows down and speeds up 1 speed drives. Like I said just have a look around and you will notice that they are everywhere.

Answer 2

Gears are all about leverage and transmitting force.

By changing gear ratios (diameters) you can increase or decrease the amount of pressure or force needed to move something.  For instance: if you wanted to pull a 3000 lb boat onto a trailer, it would be pretty hard to grab a rope and pull, but if you add a winch with 2 or 3 reduction gears, then an average person can do it.

There are gears in just about every vehicle, almost every machine the moves or moves something uses gears, wind up watches and clocks, airplanes, helicopters, boats, elevators, escalators, automatic doors, toys, printers, copy machines, the list goes on and on.

Answer 3

they help use by getting us moving. lets put it this way if you had a car with only one gear how fast do you think that car would go. not very fast because if you have one gear that one gear will come to a limit and then there has to be another gear so you can go faster than the one before was going. or if you need the torque then you would have to have the first two gears have power and the rest have enough power to keep you rolling at the speed desired without wasting gas

Answer 4

- In the marine field the gears r very important. Normally the boat engine is something between 2000 to 4000 r.p.m so u can't use them directly to the propeller shaft.We use the gears to reduce the r.p.m to about 300: 800 r.p.m so u can use them to the propeller shaft.

- Another use for the gears is to reverse the direction of rotation ( when u use input gear and output gear u can reverse the direction of rotation and when u use 3 gears input ,intermediate and output gear u can obtain the same direction of rotation.

- U can use gears to transmit the motion 90 degrees ( using 2 bevel gears) As we us in the boats outboard motors (Z drive)

Answer 5

gears.... omg there is just to much that i could say aboiut gears, thye help cars, machines, machines that make cars. bycicles EVERYTHNG motor driven a gear is probably helping.