Posted by Mike on Thursday, December 6, 2012 at 5:43pm.
A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal 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): Assuming the ladder stays in equilibrium, calculate H and V, the horizontal and vertical force components on the foot of the ladder as a function of M,d,m,and theta.
(b): if the maximum horizontal frictional force H is related to V through H=u*V, what is the minimum coefficient of friction u required to prevent the ladder from slipping?
(c): Is a heavy ladder more or less safe for a given angle and coefficient of friction?

Physicsplease please i need help!  Mike, Thursday, December 6, 2012 at 9:55pm
A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal 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): Assuming the ladder stays in equilibrium, calculate H and V, the horizontal and vertical force components on the foot of the ladder as a function of M,d,m,and theta.
(b): if the maximum horizontal frictional force H is related to V through H=u*V, what is the minimum coefficient of friction u required to prevent the ladder from slipping?
(c): Is a heavy ladder more or less safe for a given angle and coefficient of friction?
Answer This Question
Related Questions
 physics  A person with mass 70 kg is climbing a ladder (length 6m, mass 20 kg) ...
 Physics  A ladder (L = 7.80 m) of weight WL = 360 N leans against a smooth ...
 physics  A ladder (ℓL = 7.50 m) of weight WL = 350 N leans against a ...
 Physics  A ladder ABC of length 20m is leaning against a wall at an angle from ...
 physics  A painter climbs a ladder leaning against a smooth wall. At a certain ...
 Physics PLEASE HELP  A painter climbs a ladder leaning against a smooth wall...
 Physics  A uniform ladder of length L and mass m leans against a frictionless ...
 Calculus Ladder Problem  A ladder 20 ft long rests against a vertical wall. Let...
 physics help!  A uniform stationary ladder of length= 5.1 m and mass= 15 kg ...
 College Physics  A uniform stationary ladder of length= 5.1 m and mass= 15 kg ...
More Related Questions