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प्रश्न
Name the class to which the following lever belong:
a wheelbarrow
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उत्तर
a wheelbarrow: Class II lever.
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संबंधित प्रश्न
Give one example of a class I lever in a case where the mechanical advantage is less than 1?
How can you increase the mechanical advantage of a lever?
State three differences between the three classes of levers.
In a lever, the fulcrum is at one end at a distance of 30 cm from the load and effort is at the other end at a distance of 90 cm from the load. Find :
(a) the length of load arm,
(b) the length of effort arm, and
(c) the mechanical advantage of the lever.
Answer the following.
What is a Class I lever?
Answer the following in a word or two or in a sentence.
Which type of machine is used to squeeze a lemon?
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
A catapult
