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Levers and Fulcrums. if 100 kg is the weight to be lifted using a rod with the fulcrum 100cm from the object. how much force is required where the effort is 100 cm from that fulcrum?
Gillanne
You would need 100 kg, or 980 N.
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∙ 13y ago
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What is the major factor controlling the manner in which levers work?
The difference in the positioning of the effort, load, and fulcrum.
What are the three levers of the muscular system?
C. where the components of the lever are located.
What is the first class lever in the human body?
1st class levers are levers which have fulcrum between the load and effort.1st class lever in our body is our elbow joint .fulcrum:elboweffort:bicepsload:armarm and head
What is the most common lever in the human body?
There are three components of a lever system besides the lever arm: the fulcrum, the force, and the load. There are also three types of levers called class 1, 2, and 3. Class 1 is where the force is on the opposite side of the fulcrum as the load. Class 2 has load between the fulcrum and the force, and Class 3 has the force in between the fulcrum and the load. In the body, the fulcrum can be one of many joints, such as an elbow, knee, or ankle. An example of a Class 1 lever would be a tricep extension, where the tricep on one side of the elbow moves the load held by the hand on the other side. A Class 2 example would be a calf raise, where the weight of your body is focused between the calf and the fulcrum (the ball of the foot). A Class 3 example would be a bicep curl, with the bicep in between the fulcrum (elbow) and the load (hand).
When holding an object steady does the number of motor units remain the same?
Yes it does. As long as the effort to hold the object in a steady position remains the same, then the number of motor units needed to keep it in that position remains the same. It is only when the force, or effort, required to do a specific task changes does the number of motor units needed to accomplish the task change.
What do second and third levers both have?
the fulcrum between the effort and load B. effort applied in the same place C. two loads and fulcrums D. the fulcrum at one end of the lever
What do second and third class levers both have?
the fulcrum between the effort and load B. effort applied in the same place C. two loads and fulcrums D. the fulcrum at one end of the lever
How do levers work?
levers work by having a effort that lifts a load, and a fulcrum balances the two
What are some examples of class 3 levers?
First class levers are like see-saws. The fulcrum (turning point) comes between the effort and the load. So if you push down on the effort the load goes up. With second class levers the load comes between the effort and the fulcrum. This is good for catapulting things. Third class levers have the effort between the load and the fulcrum. An example would be a fishing rod. The fish on the end is the load, your hand on the rod is the effort and the hand at the end is the fulcrum.
Class levers have the resistance force between the effort force and the fulcrum?
Class 2.
What are the positions of fulcrum effort arm and load arm of a catapault?
The fulcrums at the base of the catapult That's all I know sorry :(
Why Wheel Barrow is second order lever?
because the load is in between the effort and the fulcrum. In second order levers the load is always in between the effort and the fulcrum.
Classification of levers?
There are three different Classes of levers. Class One Levers have a fulcrum in the middle. Class Two Levers have a resistance in the middle. Class Three Levers have effort in the middle.
How are first and second class levers different?
the first class levers have the fulcrum in the middle and the resistance and effort on the two sides second class levers have the resistance in the middle and the fulcrum and the effort on the two sides
What is the major factor controlling the manner in which levers work?
The difference in the positioning of the effort, load, and fulcrum.
What makes the first class lever second class lever third class lever different?
1st order levers have the fulcrum between the load and effort arms. The mechanical advantage of these levers can be greater or less than 1, depending on the length of the arms.2nd order levers have the load portion between the effort portion and the fulcrum. These always have a mechanical advantage greater than 1. They increase the force exerted at the expense of distance.3rd order levers have the effort portion between the load portion and the fulcrum. These always have a mechanical advantage less than 1. They decrease the force exerted with a gain to the distance.
What are the disadvantages of first class levers?
disadvantage of first class the fulcrum lies on more effort or more force.
