Q1. What is called lever? Q2. What is called load? Q3. Define effort. Q4. What is fulcrum? Q5. Give three examples of lever. Q6. What is called Mechanical Advantage (M.A)? Write the expression of M.A. Q7. Write a note on class-1 lever. Q8. Show the position of load, effort and fulcrum in a class-1 lever with a diagram. Q9. Give the examples of class-1 lever. Q10. How many types of levers are there? Name them.
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Answers
Answer:
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1.) A lever (/ˈliːvər/ or US: /ˈlɛvər/) is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three types.
2.) Entry 1 of 2) 1 : something lifted up and carried : burden. 2 : the quantity of material put into a device at one time He washed a load of clothes. 3 : a large number or amount They collected loads of candy on Halloween. 4 : a mass or weight supported by something.
3.) to do something even though you do not want to or you find it difficult. I wish you'd make the effort to get on with her. Synonyms and related words. To try hard to do or get something. work.
4.) The fulcrum is the point on which the beam pivots. When an effort is applied to one end of the lever, a load is applied at the other end of the lever. This will move a mass upward.
5.) Wheelbarrows, fishing rods, shovels, brooms, arms, legs, boat oars, crow bars, and bottle openers are all examples of levers. Levers may be one of the most used simple machine. As with all simple machines like the lever, they are designed to help make work easier to do.
6.) Mechanical advantage is a measure of the ratio of output force to input force in a system, used to analyze the forces in simple machines like levers and pulleys. ...