![subject](/tpl/images/cats/fizika.png)
Physics, 07.08.2019 05:20 sadiemk821
A14.0 m uniform ladder weighing 490 n rests against a frictionless wall. the ladder makes a 63.0°-angle with the horizontal.
(a) find the horizontal and vertical forces (in n) the ground exerts on the base of the ladder when an 820-n firefighter has climbed 3.80 m along the ladder from the bottom. (horizontal force, vertical force)
(b) if the ladder is just on the verge of slipping when the firefighter is 9.10 m from the bottom, what is the coefficient of static friction between ladder and ground?
(c) what if? if oil is spilled on the ground, causing the coefficient of static friction to drop to half the value found in part (b), what is the maximum distance (in m) the firefighter can climb along the ladder from the bottom before the ladder slips?
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 22:50, toddbecca9
Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]
Answers: 2
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 19:40, flore9584
Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.
Answers: 2
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 23:00, electrofy456
Which of the following is another term for a planned economy
Answers: 1
You know the right answer?
A14.0 m uniform ladder weighing 490 n rests against a frictionless wall. the ladder makes a 63.0°-an...
Questions in other subjects:
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 22.06.2021 03:10
![Konu](/tpl/images/cats/en.png)
English, 22.06.2021 03:10
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 22.06.2021 03:10
![Konu](/tpl/images/cats/en.png)
English, 22.06.2021 03:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 22.06.2021 03:10
![Konu](/tpl/images/cats/geografiya.png)
Geography, 22.06.2021 03:10
![Konu](/tpl/images/cats/istoriya.png)
History, 22.06.2021 03:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 22.06.2021 03:10