Physics

Newton's law of motion

11/5/2020
MasteringPhysics: Module 6 Fall 2020
A Person Standing on a Leaning Ladder
A uniform ladder with mass m2 and length L rests against a smooth wall. A do-it-yourself enthusiast of mass mi stands on the
ladder a distance d from the bottom (measured along the ladder). The
ladder makes an angle with the ground. There is no friction between
the wall and the ladder, but there is a frictional force of magnitude f
between the floor and the ladder. N1 is the magnitude of the normal
force exerted by the wall on the ladder, and N2 is the magnitude of
the normal force exerted by the ground on the ladder. Throughout the
m2
problem, consider counterclockwise torques to be positive. None of
L
your answers should involve 7 i.e., simplify your trig functions).
m
N,
Part A
What is the minimum coeffecient of static friction Amin required between the ladder and the ground so that the ladder does
not slip?
Express Hiin in terms of mi, m2, d, L, and 0.
You did not open hints for this part.
ANSWER:
Humina