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You drag a trunk of mass m across a level floor using a massless rope that makes an angle with the horizontal. Given a kinetic-friction coefficient (μ), Find the minimum force needed to move the trunk with constant speed. Do not answer in terms of theta; essentially, if you were allowed to vary the angle at which you pull the trunk, what is the minimum force required?
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Welches Thema ist das genau ?
your exercise can be represented by this drawing: |dw:1443890056456:dw|
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