1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
8_murik_8 [283]
3 years ago
6

A hawser is wrapped two full turns around a bollard. By exerting an 80-lb force on the free end of the hawser, a dockworker can

resist a force of 5000 lb on the other end of the hawser. Determine (a) the coefficient of static friction between the hawser and the bollard, (b) the number of times the hawser should be wrapped around the bollard if a 20,000-lb force is to be resisted by the same 80-lb force
Engineering
1 answer:
Brut [27]3 years ago
4 0

Answer:

μ=0.329, 2.671 turns.

Explanation:

(a)   ln(T2/T1)=μβ         β=angle of contact in radians

take T2 as greater tension value and T1 smaller, otherwise the friction would be opposite.

T2=5000 lb and T1=80 lb

we have two full turns which makes total angle of contact=4π  radians

μ=ln(T2/T1)/β=(ln(5000/80))/4π  

μ=0.329

(b) using the same relation as above we will now compute the angle of contact.

take greater tension as T2 and smaller as T1.

T2=20000 lb     T1=80 lb   μ=0.329

β=ln(20000/80)/0.329=16.7825 radians

divide the angle of contact by 2π to obtain number of turns.

16.7825/2π =2.671 turns

You might be interested in
Gasoline has a comparatively high Btu per gallon rating of around
Shalnov [3]

Answer:

A

Explanation:

4 0
3 years ago
Help please really fast!!
ra1l [238]

Answer:368 hdhtygtÿ

901 vuiøöńč

Explanation:

6 0
3 years ago
Which of the following are some of the problems found in city streets?
storchak [24]

Answer: drugs and rushing cars

Explanation: drug dealers are everywhere on city streets nowadays they have been killing young adults

rushing cars or reckless drivers cut curb fast and potentially someone can get hurt they are speeding and not worrying about other people lives at stake

4 0
3 years ago
Please look at the picture for question.
Vilka [71]

Answer:

more than 10 joules jjsjdnjdfjnfjfnjfnnfndnndjnfjgngjntjfjmrmdkdmjd

5 0
2 years ago
Read 2 more answers
What. is the capital city of panjab​
kotegsom [21]

Answer:

Chandigarh

Explanation:

Chandigarh city is the capital of the territory and of the states of Haryana and Punjab. Chandigarh's name, meaning “stronghold of the goddess Chandi,” is derived from the Chandi Mandir, a temple dedicated to the goddess that is located near the town of Mani Majra. Area union territory, 44 square miles (114 square km).

8 0
3 years ago
Other questions:
  • Draw your vectors starting at the black dot. The orientation of your vectors will be graded. The exact length of your vectors wi
    10·1 answer
  • Looking at the response vehicles (pictured above), explain two options you have in order to abide by the Move
    8·1 answer
  • Define ""acidity"" of an aqueous solution. How do you compare the strength of acidity of solutions ?
    6·1 answer
  • What is the average linear (seepage) velocity of water in an aquifer with a hydraulic conductivity of 6.9 x 10-4 m/s and porosit
    13·1 answer
  • Under which of the following conditions is a Type B-1 Fire extinguisher required onboard a motorized vessel?
    14·2 answers
  • The air velocity in the duct of a heating system is to be measured by a Pitot-static probe inserted into the duct parallel to th
    13·1 answer
  • A 0.50 m3 drum was filled with 0.49 m3 of liquid water at 25oC and the remaining volume was water vapor without any air. The dru
    15·1 answer
  • A tiger cub has a pattern of stripes on it for that is similar to that of his parents where are the instructions stored that pro
    8·1 answer
  • Given the inherent costs of regulation it is safe to say that there is always a negative economic impact associated with regulat
    7·1 answer
  • A ruptured desiccant bag in a reciever-driver is usually caused by what?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!