Question
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a...
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a 55.0° angle with the horizontal.
(a) Find the horizontal and vertical forces the ground exerts on
the base of the ladder when an 820-N firefighter has climbed 4.20 m
along the ladder from the bottom.
Horizontal Force
| magnitude | N |
| direction | ---Select--- towards the wall away from the wall |
Vertical Force
| magnitude | N |
| direction | ---Select--- up down |
(b) If the ladder is just on the verge of slipping when the
firefighter is 9.20 m from the bottom, what is the coefficient of
static friction between ladder and ground?
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a...
A 16.0-m uniform ladder weighing 490 N rests against a
frictionless wall. The ladder makes a 57.0° angle with the
horizontal.
(a) Find the horizontal and vertical forces the ground exerts on
the base of the ladder when an 850-N firefighter has climbed 4.20 m
along the ladder from the bottom.
Horizontal Force
magnitude
direction
Vertical Force
magnitude
direction
(b) If the ladder is just on the verge of slipping when the
firefighter is 9.10 m from the bottom, what...
A 16.0-m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a...
A 16.0-m uniform ladder weighing 490 N rests against a
frictionless wall. The ladder makes a 61.0° angle with the
horizontal.
(a) Find the horizontal and vertical forces the ground exerts on
the base of the ladder when an 820-N firefighter has climbed 4.30 m
along the ladder from the bottom.
Horizontal Force
magnitude
__N
direction
- towards the wall or away from the wall?
Vertical Force
magnitude
N
direction
up or down?
(b) If the ladder is just on...
A 15.5 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes...
A 15.5 m uniform ladder weighing 480 N rests against a
frictionless wall. The ladder makes a 56.0° angle with the
horizontal.
(a) Find the horizontal and vertical forces the ground exerts on
the base of the ladder when an 800 N firefighter is 4.00 m from the
bottom.
Magnitude of the horizontal force
Direction
away from the wall
towards the wall
Magnitude of the vertical force
Direction
up
down
(b) If the ladder is just on the verge of...
A 14.0 m uniform ladder weighing 510 N rests against a frictionless wall. The ladder makes...
A 14.0 m uniform ladder weighing 510 N rests against a
frictionless wall. The ladder makes a 61.0°-angle with the
horizontal.
(a)
Find the horizontal and vertical forces (in N) the ground exerts
on the base of the ladder when an 850-N firefighter has climbed
3.80 m along the ladder from the bottom.
horizontal force
magnitude Ndirection ---Select--- towards the wall away from the
wall
vertical force
magnitude Ndirection ---Select--- up down
(b)
If the ladder is just on the...
A ladder having a uniform density and a mass m rests against a frictionless vertical wall,...
A ladder having a uniform density and a mass m rests
against a frictionless vertical wall, making angle 49.0° with the
horizontal. The lower end rests on a flat surface where the
coefficient of static friction is µs = 0.410. A window
cleaner with mass M = 2m attempts to climb the
ladder. Given a ladder length of L, what fraction of the
length of the ladder (x / L) will the worker have reached
when the ladder begins to...
A ladder having a uniform density and a mass m rests against a frictionless vertical wall,...
A ladder having a uniform density and a mass m rests
against a frictionless vertical wall, making angle 50.0° with the
horizontal. The lower end rests on a flat surface where the
coefficient of static friction is µs = 0.420. A window
cleaner with mass M = 2m attempts to climb the
ladder. Given a ladder length of L, what fraction of the
length of the ladder (x / L) will the worker have reached
when the ladder begins to...
A uniform ladder rests against a frictionless wall at an angle of θ = 50.0° with...
A uniform ladder rests against a frictionless wall at an angle
of
θ = 50.0°
with respect to the ground. If the weight of the ladder is
WL = 250 N,
the length is
L = 9.0 m,
and the coefficient of static friction between the ladder and
the ground is
μs = 0.65,
determine the distance a man with a weight of
WM = 800 N
can climb along the ladder before the ladder begins to slip.
A uniform ladder rests against a frictionless wall at an angle of θ = 54.0° with...
A uniform ladder rests against a frictionless wall at an angle
of θ = 54.0° with respect to the ground. If the weight of the
ladder is WL = 240 N, the length is L = 7.0 m, and the coefficient
of static friction between the ladder and the ground is μs = 0.55,
determine the distance a man with a weight of WM = 875 N can climb
along the ladder before the ladder begins to slip
. ______m
A 2.0 m long, 200 N uniform ladder, rests with one end against a smooth wall...
A 2.0 m long, 200 N uniform ladder, rests with one end against a
smooth wall making an angle of 30 degrees with the wall. The
coefficient of friction between the ground and the lower end of the
ladder is .5. With how large a force can you push the upper end of
the ladder parallel to the wall before it starts to slip down?
73. A uniform ladder is 10 m long and weighs 200 N. The ladder leans against...
73. A uniform ladder is 10 m long and weighs 200 N. The ladder
leans against a vertical, frictionless wall at height h = 8.0 m
above the ground. A horizontal force F is applied to the ladder at
distance d = 2.0 m from its base ( measured along the ladder ).
a) If force magnitude F = 50 N what is the force of the ground
on the ladder, in unit-vector notation? answer (35 i + 200 j)...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 6 minutes ago
asked 7 minutes ago
asked 9 minutes ago
asked 22 minutes ago
asked 28 minutes ago
asked 28 minutes ago
asked 33 minutes ago
asked 44 minutes ago
asked 59 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago