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Statement of a problem № 2536

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As shown in Fig. 7-5, a jackscrew has a lever arm of 40 cm and a pitch of 5.0 mm. If the efficiency is 30 percent, what horizontal force F applied perpendicularly at the end of the lever arm is required to lift a load Fw of 270 kg?

Solution:
As shown in Fig. 7-5, a jackscrew has a lever arm of 40 cm and a pitch of 5.0 mm

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