Answer :
Final answer:
Using the lever principle to balance the torques, the force needed to lift the oil with a force arm of 8 ft is 0.5 ton.
Explanation:
The subject of this problem is the principle of equilibrium in physics, specifically involving the balance of torques. The physics and engineering principle at play here is the lever arm principle,
which states that the turning effect or torque of a force depends not only on the force but also on where the force is applied.
In this scenario, the weight being lifted (1 ton) multiplied by the length of its arm (4 ft) must be equal to the force needed to lift the weight multiplied by the length of its arm (8 ft). Using the formula of the lever principle F1 x D1 = F2 x D2 (where F is force and D is distance),
we get that F2 = (F1 x D1) / D2, you can substitute the given values into the formula: F2 = (1 ton x 4 ft) / 8 ft = 0.5 ton. Therefore, the force needed to lift the oil on a force arm 8 ft long is 0.5 ton.
Learn more about torques
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