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प्रश्न
The following belong to which class of lever?
Wheelbarrow
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उत्तर
Second-class of lever
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संबंधित प्रश्न
Which class of lever will always have MA > 1 and why?
shows a nut cracker name the class of lever ?
Give three examples for leavers of the third order.
The following belong to which class of lever?
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The following belong to which class of lever?
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The following belong to which class of lever?
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Shears, used for cutting metals and scissors used for cutting clothes are both examples of levers of the first order. However, whereas the shears always have short blades and long handles, the scissors often have blades much longer than the handles. Explain, why this is so?
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
A crowbar of length 100 cm is used to lift a load of 5 kgf. It has its fulcrum at a distance of 20 cm from the load. Calculate:
(i) the mechanical advantage of a crowbar and,
(ii) the effort applied at the other end.
