Question

Neha and Reha are playing see-saw Neha is sitting 60cm away from the fulcrum and Reha is sitting 40 cm away from the fulcrum .Calculate the effort that Reha should apply to lift Neha. The weight of Neha is 360N.

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Answer 1

Explanation:

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Load x Load arm = Effort x Effort arm

Here, take the 50 kg boy as the load and the 40 kg boy as the effort.

50 x 1.2 = 40 x effort arm

60 = 40 x effort arm

Effort arm = 1.5 m

So if the 50 kg boy sits 1.2 m from the fulcrum of a see-saw then the other boy of 40 kg should sit on the other side at a distance of 1.5 m from the fulcrum.