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Calculate the value of $V$.
Mathematics 9709 · AS & A Level · Energy, work and power
Energy, work and power — practice question
A crane is raising a load of $1250\,\text{kg}$ straight upward at a steady speed $V\,\text{m s}^{-1}$. The crane’s power is a constant $20\,\text{kW}$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Using $P = Fv$ with $F = mg$, set up the equation $20000 = V \times 1250g$” …
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