Figure shows a simple lever used to lift a load. The fulcrum F is located 0.2 m from the load point L and 0.8 m from the effort point E. (a) If the farmer applies a force of 150 N at E, what is the maximum mass (in kg) that can be lifted at L (take g=9.8\, ext{m\,s}^{-2})? (b) How much effort force is required to lift a 50\,kg sack at L?

Question

Figure shows a simple lever used to lift a load. The fulcrum F is located 0.2 m from the load point L and 0.8 m from the effort point E. (a) If the farmer applies a force of 150 N at E, what is the maximum mass (in kg) that can be lifted at L (take g=9.8\,	ext{m\,s}^{-2})? (b) How much effort force is required to lift a 50\,kg sack at L?

Accepted Answer

Maximum mass ≈61.2 kg; effort for 50 kg load ≈122.5 N

Gce Model Questions Vol1 2020 Agricultural Science Question 40

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