a ladder of length and mass leans against a wall at an anglefrom the vertical. t

Question

a ladder of length and mass leans against a wall at an anglefrom the vertical. the wall is smooth so only ahorizontal force N is exerted on the top of the ladder a fireman of mass M climbs a distance d upward as measured along the ladder

a.) calculate H and V , the horizontal and vertical force components on the foot of the ladder as a function of M,d,m,L

b.) if the max horizontal force H is related to V through H=muV, what is the minimum coefficient of friction mu required to prevent the ladder from slipping

c.) is a heavy ladder more or less safe for a given angle and coefficient of friction

Explanation / Answer

a ladder of length and mass leans against a wall at an anglefrom the vertical. t

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