Question

A 10.0 -kg monkey climbs a uniform ladder with weight w = 1.20x10^2 N and length L=3.00m (hypotenuse) as shown in the figure. The ladder rests against the wall at an angle of theta = 60.0°. The upper and lower ends of the ladder rest on frictionless surfaces, with the lower end fastened to the wall by a horizontal rope that is frayed and that can support a maximum tension of only 80.0 N. (a) Draw a force diagram for the ladder. (b) Find the normal force exerted by the bottom of the ladder. (c) Find the tension in the rope when the monkey is two-thirds of the way up the ladder. (d) Find the maximum distance d that the monkey can climb up the ladder before the rope breaks. (e) If the horizontal surface were rough and the rope were removed, how would your analysis of the problem be changed and what other information would you need to answer parts (c) and (d)?

Answer #1

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 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 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 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...

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 L = 13.2 m ladder whose weight is mg = 230 N is placed against
a smooth vertical wall. A person whose weight is Mg = 470 N stands
on the ladder a distance d = 2.9 m up the ladder. The ladder makes
an angle of θ = 35° with the vertical.
Find the normal force exerted by the floor on the ladder.
Express your answer using three significant figures. Credit: 4
pts.
Find the force of friction...

A uniform horizontal beam with length l= 7.1m and weight W
b= 420N is attached to the wall by a pin connection. Its
far end is supported by a cable that makes an angle of
θ=60° with the beam. Furthermore, a picnic basket of
weight WP= 201N is hanging from the far end of the beam.
The hungry Yogy bear with a weight of WY= 816N is
standing on a beam at a distance d=8.0m from the wall.
a) Calculate...

A strut of length L= 3.00 m and mass
m = 18.1 kg is held by a cable at an angle of
θ = 28.0°
.
(a) Sketch a force diagram, indicating all the forces and their
placement on the strut. (Submit a file with a maximum size of 1
MB.)
(b) Why is the hinge a good place to use for calculating
torques?
(c) Write the condition for rotational equilibrium symbolically,
calculating the torques around the hinge. (Submit a...

21) A person carries a 25.0-N rock through the path shown in the
figure, starting at point A and ending at point B. The total time
from A to B is 1.50 min. How much work did gravity do on the rock
between A and B?
A) 625 J
B) 20.0 J
C) 275 J
D) 75 J
E) 0 J
22) A person carries a 2.00-N pebble through the path shown in
the figure, starting at point A and...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 16 minutes ago

asked 26 minutes ago

asked 39 minutes ago

asked 46 minutes ago

asked 46 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago