You were using a ramp to lift a 200 kg object you raised


You were using a ramp to lift a 200 kg object. You raised the object 3m above the ground while doing 7500 J of work. Knowing, that gravity and friction could be the only forces you had to work against, was there any friction involved? if so, how much work did you have to do against it?

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Physics: You were using a ramp to lift a 200 kg object you raised
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