Aladder whose length l is 12 m and mass m is 45 kg rests against a wall. its upper end is a distance h of 9.3 m above the ground. the center of mass of the ladder is one-third of the way up the ladder. a fire fighter whose mass m is 72 kg climbs the ladder until his center of mass is halfway up. assume the wall but not the ground is frictionless. what forces are exerted on the ladder by the wall and by the ground? provide both the magnitude and direction of the ground force.
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Aladder whose length l is 12 m and mass m is 45 kg rests against a wall. its upper end is a distance...
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