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18 Feb 2018
5.29 - A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it, and the crate just begins to move when your force exceeds 313 N. Then you must reduce your push to 208 N to keep it moving at a steady 25.0 cm/s. (a) What are the coefficients of static and kinetic fric- tion between the crate and the floor? (b) What push must you exert to give it an acceleration of 1.10 m/s2? (C) Suppose you were per- forming the same experiment on the moon, where the acceleration due to gravity is 1.62 m/s. 1) What magnitude push would cause it to move? (ii) What would its acceleration be if you maintained the push in part (b)?
5.29 - A 45.0-kg crate of tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it, and the crate just begins to move when your force exceeds 313 N. Then you must reduce your push to 208 N to keep it moving at a steady 25.0 cm/s. (a) What are the coefficients of static and kinetic fric- tion between the crate and the floor? (b) What push must you exert to give it an acceleration of 1.10 m/s2? (C) Suppose you were per- forming the same experiment on the moon, where the acceleration due to gravity is 1.62 m/s. 1) What magnitude push would cause it to move? (ii) What would its acceleration be if you maintained the push in part (b)?
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Sixta KovacekLv2
19 Feb 2018
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