A 25.5 kg person climbs up a uniform ladder
with negligible mass. The upper end of the
ladder rests on a frictionless wall. The bottom
of the ladder rests on a floor with a rough
surface where the coefficient of static friction
is 0.22 . The angle between the horizontal and
the ladder is θ . The person wants to climb
up the ladder a distance of 0.98 m along the
ladder from the ladder’s foot.What is the minimum angle θmin (between
the horizontal and the ladder) so that the
person can reach a distance of 0.98 m without
having the ladder slip? The acceleration of
gravity is 9.8 m/s
2.Answer in units of ◦. Don't round answer.
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