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One of the easiest, lowest-cost protection devices to designate danger is simple signage, but everyone has to understand the severity of the hazards that they face.
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Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.
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One of the easiest, lowest-cost protection devices to designate danger is simple signage, but everyo...
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