![benjaminmccutch](/avatars/4882.jpg)
benjaminmccutch
11.02.2020 •
Mathematics
A spring has a natural length of 7 m. If a 4-N force is required to keep it stretched to a length of 11 m, how much work W is required to stretch it from 7 m to 13 m?
Solved
Show answers
More tips
- C Computers and Internet Discovering the Differences Between iPad Wi-Fi and iPad 3G...
- F Food and Cooking What s the Best Rice for Cooking Plov?...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Food and Cooking How to Make Polendwitsa at Home?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Mathematics
- M Mathematics Please help me please i will love you forever FOR 20 POINTS...
- M Mathematics The sum of Molly and Bobby’s ages is 14. If Molly is 5 years older than twice Bobby’s age, how old is each child?...
- E English Which sentences from the text best help the reader visualize the topic of moving or shifting tectonic plates? Choose all of the following pieces of text evidence that...
- E English Daedelus warns Icarus about the sun and water in regards to the wings because . A. He shouldn t fly too low or high. B. He can fly though building. C. They make his stronger....
- B Biology The cell shown above in the diagram is found in which type of organism?...
- M Mathematics Captain Blackbeard has 88 gold coins altogether. The numbers on the treasure chests below show how many gold coins are in each chest. Which two chests does Blackbeard...
Ответ:
18 J is the work required to stretch a spring from 7 m to 13 m.
Step-by-step explanation:
The work done is defined to be the product of the force
and the distance
that the object moves:
If
is measured in newtons and
in meters, then the unit for is a newton-meter, which is called a joule (J).
This definition work as long as the force is constant, but if the force is variable like in this case, we have that the work done is given by
Hooke’s Law states that the force required to maintain a spring stretched
units beyond its natural length is proportional to
where
is a positive constant (called the spring constant).
To find how much work W is required to stretch it from 7 m to 13 m you must:
Step 1: Find the spring constant
We know that the spring has a natural length of 7 m and a 4 N force is required to keep it stretched to a length of 11 m. So, applying Hooke’s Law
Thus![F=x](/tpl/images/0507/2467/7ec32.png)
Step 2: Find the the work done in stretching the spring from 7 m to 13 m.
Recall that the natural length is 7 m, so when we stretch the spring from 7 m to 13 m, we are stretching it by 6 m beyond its natural length.
Work needed to stretch it by 6 m beyond its natural length
18 J is the work required to stretch a spring from 7 m to 13 m.
Ответ:
She probably wants attention from you maybe compliment her outfit or something like that.