What work needs to be done to lift a 30 kg load to a height of 10 m with an acceleration of 2 m / s2?

These tasks: m (weight of the lifted load) = 30 kg; h (lifting height) = 10 m; a (acceleration of the load during lifting) = 2 m / s2.
Reference values: g (acceleration due to gravity) ≈ 10 m / s2.
1) Determine the force that was applied when lifting the load: m * a = F – m * g, whence F = m * a + m * g = 30 * 2 + 30 * 10 = 360 N.
2) Let’s calculate the required work: A = F * S = F * h = 360 * 10 = 3600 J (3.6 kJ).
Answer: When lifting a load, you need to do a work of 3.6 kJ.



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