Levers have existed since prehistoric times. There is no record of who invented levers. The earliest mention of levers of which there is a record was by Archimedes, but they were in use long before his time.
Difficult, levers are essential in life. Mostly everything we use uses levers such as our body, airplanes, lifting things, scissiors, nutcrackers etc. Some things require levers and they would not be possible without them. Hope that helped :)
they are second class levers
Scientist use physics for all sorts of things. Scientist can use Newtons and other gravity-related laws to work out the trajectory of a crashing satellite. If scientist wanted to, he could look use molecular physics to predict how chemicals will react. Scientist is a pretty cool guy.
Scientist use a light meter to show how light in shining on a surface !
She has mastered the basics of her craft. He mastered the class.
Most people use levers to turn on and off a giant machine. But I only know that scientists use it. =)
archimedes
Levers will wear and tear after use and money will have to be spent to repair or replace them.
Teeter totter
Levers have existed since prehistoric times. There is no record of who invented levers. The earliest mention of levers of which there is a record was by Archimedes, but they were in use long before his time.
Difficult, levers are essential in life. Mostly everything we use uses levers such as our body, airplanes, lifting things, scissiors, nutcrackers etc. Some things require levers and they would not be possible without them. Hope that helped :)
Mechanical advantage is not the only reason to use levers.
I gracefully mastered the art of Taekwondo.
Scales and kitchen use.
Shovel,broom and spoon
because it makes things easier to lift..... that's why you use it i think.........