This helps by multiplying the applied force(effort). So,it is a force multiplier. That means the mechanical advantage of a class 2 lever is always more than 1.
Q. Can a first class lever have a mechanical advantage less than one?
Is it possible for a first or second class lever to have a mechanical advantage less than one, or for a third class lever to have a mechanical advantage greater than one? No, a second class lever always has a mechanical advantage over 1. 3. No, a third class lever always has a mechanical advantage less than 1.
Table of Contents
- Q. Can a first class lever have a mechanical advantage less than one?
- Q. Why is the mechanical advantage of a second class lever greater than 1?
- Q. What is the mechanical advantage of second class lever?
- Q. Why is the mechanical advantage of a third class lever less than one?
- Q. Can a third class lever have a mechanical advantage greater than 1?
- Q. Is a wrench a third class lever?
- Q. What class lever has the load in the middle?
- Q. What type of lever do we find most often in the human body?
- Q. Who said Give me a lever and I’ll move the Earth?
- Q. What is Archimedes famous for saying?
- Q. How long does it take a lever to move the world?
- Q. Who said with a lever long enough?
Q. Why is the mechanical advantage of a second class lever greater than 1?
Second class lever has mechanical advantage always more than one as load is in between fulcrum and effort making the effort arm longer than the load arm.
Q. What is the mechanical advantage of second class lever?
In a second class lever the effort moves over a large distance to raise the load a small distance. As the ratio of effort (force) arm length to load arm length increases, the mechanical advantage of a second class lever increases.
Q. Why is the mechanical advantage of a third class lever less than one?
The mechanical advantage of a lever of the third order is always less than one because the effort arm is always less than the load arm.
Q. Can a third class lever have a mechanical advantage greater than 1?
Even when the effort is larger than the load as for third class levers, we can still calculate a mechanical advantage , but it will come out to be less than one.
Q. Is a wrench a third class lever?
In Class 3 levers the effort is between the fulcrum and load. In Class 3 levers the effort is between the fulcrum and load. The fulcrum in the case of the wrench is the bolt or threaded rod the nut turns on.
Q. What class lever has the load in the middle?
Second
Q. What type of lever do we find most often in the human body?
In a third-class lever, the most common in the human body, force is applied between the resistance (weight) and the axis (fulcrum) (figure 1.23a). Picture someone using a shovel to pick up an object. The axis is the end of the handle where the person grips with one hand.
Q. Who said Give me a lever and I’ll move the Earth?
Archimedes
Q. What is Archimedes famous for saying?
Archimedes quotes Showing 1-19 of 19 “Give me a place to stand and I will move the earth.” “Give me but a firm spot on which to stand, and I shall move the earth.” “Give me a place to stand, and a lever long enough, and I will move the world. ”
Q. How long does it take a lever to move the world?
The mass of Earth is 6×1024kg. If Archimedes can lift 60 kg, he would need a lever with an arm ratio of 1023:1. So if the short arm is one meter long, the lever length will be 1023 meters plus one. Also, note that he would have to push the lever for 1020 meters to shift the Earth just by one millimeter.
