Yes ,spanner is an example of lever that is operated by hand, for tightening bolts and nuts.
first order lever
first order lever second order lever third order lever
yes it is a 1st class lever and so is a pair of pliers!!!!
Third order
A class 1 lever , where the joint acts as the fulcrum , the head the load and the muscles below the joint as the effort. Therefore it is a first order lever.
Nut cracker is a second order lever because the nut(load) is in between.
The main cutter or the clip is third class and the handle is of second class.
no it isn't. A screwdriver is an example of a wheel and axle
Nut cracker is a second order lever because the nut(load) is in between.
In order for the lever to be in effect, there has to be one of a number of factors. If a heavier person is closer to the bar (fulcrum), than a lighter person, then we have a first class lever. A second class lever would be if someone is moving the end of the board from closer to the bar. The third class lever would be someone between the bar and the end, being lifted by someone else at the far end. Normally, teeter totters aren't being used as levers.i dont get it !
first class lever. Why? because it is in the order of output force-fulcrum-input force. output force ______________________________ input force fulcrum