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प्रश्न
Name the class to which the following lever belong:
an oar rowing a boat.
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उत्तर
an oar rowing a boat: Class I lever
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संबंधित प्रश्न
What do you mean by the mechanical advantage of a lever?
Give one example of a class I lever in a case where the mechanical advantage is equal to 1?
Name the class to which the following lever belong:
a crowbar
Name the machine to which the following belong:
Beam balance
Answer the following.
Name the simplest of all types of machines.
Give one example of a class I lever where mechanical advantage is 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
The diagram below shows a rod lifting a stone.
- Mark position of fulcrum F and draw arrows to show the directions of load L and effort E.
- What class of lever is the rod?
- Give one more example of the same class of lever stated in part (b).
