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
polet [3.4K]
4 years ago
12

(a) A 15.0 kg block is released from rest at point A in the figure below. The track is frictionless except for the portion betwe

en points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2,150 N/m, and compresses the spring 0.200 m from its equilibrium position before coming to rest momentarily. Determine the coefficient of kinetic friction between the block and the rough surface between points B and C.
(b) What If? The spring now expands, forcing the block back to the left. Does the block reach point B?

If the block does reach point B, how far up the curved portion of the track does it reach, and if it does not, how far short of point B does the block come to a stop? (Enter your answer in m.)

Physics
1 answer:
castortr0y [4]4 years ago
4 0

Answer:

(a) coefficient of friction = 0.451

This was calculated by the application of energy conservation principle (the total sum of energy in a closed system is conserved)

(b) No, it comes to a stop 5.35m short of point B. This is so because the spring on expanding only does a work of 43 J on the block which is not enough to meet up the workdone of 398 J against friction.

Explanation:

The detailed step by step solution to this problems can be found in the attachment below. The solution for part (a) was divided into two: the motion of the body from point A to point B and from point B to point C. The total energy in the system is gotten from the initial gravitational potential energy. This energy becomes transformed into the work done against friction and the work done in compression the spring. A work of 398J was done in overcoming friction over a distance of 6.00m. The energy used in doing so is lost as friction is not a conservative force. This leaves only 43J of energy which compresses the spring. On expansion the spring does a work of 43J back on the block is only enough to push it over a distance of 0.65m stopping short of 5.35m from point B.

Thank you for reading and I hope this is helpful to you.

You might be interested in
What is cheetah speed and strength?
pav-90 [236]

Answer:

Speed: 109.4–120.7 km/h (68.0–75.0 mph)

Strength: Couldn't find out.

Explanation:

3 0
3 years ago
An advantage of light microscopes compared to electron microscopes is that light microscopes _____.
ivolga24 [154]
<span>C is the correct answer. Electron microscopes require a vacuum to work, so living cells cannot be seen because they cannot respire. Light microscopes use a ray of visible light instead of a beam of electrons to magnify something so it can be seen by the naked eye. There are two different types of electron microscope: transmission (TEM) and scanning (SEM).</span>
5 0
3 years ago
Read 2 more answers
What is the process that creates wind.
Drupady [299]

Answer:

Winds are caused by differences in air pressure. Unequal heating of Earth’s surface creates areas of different pressure. Cooler areas have higher air pressure. Warmer areas have lower pressure. This causes air to move from high pressure to low pressure. This movement is the wind we feel.

plz mark me as brainliest.

6 0
3 years ago
The plunger of a syringe is pulled up halfway, as shown in the picture. With the plunger in this position, how does the volume o
noname [10]

Explanation. A gas will expand to fill its container. Pulling the plunger of the syringe creates a low pressure inside the syringe (a vacuum)

5 0
3 years ago
Read 2 more answers
Provide one example of cultural change at the nonmaterial level.
Katen [24]

Answer:

Examples include cars, buildings, clothing, and tools. Nonmaterial culture refers to the abstract ideas and ways of thinking that make up a culture. Examples of nonmaterial culture include traffic laws, words, and dress codes.

5 0
2 years ago
Other questions:
  • Which of these forms of energy is NOT regularly given off by the sun?
    10·1 answer
  • How much soil is in a 5 cm to 9 cm deep hole?
    14·1 answer
  • What is the definition of force?
    10·1 answer
  • you place a beaker of water on a hot plate and heat it up eventually it starts to boil and you see bubbles for me you also seeme
    5·2 answers
  • A car is moving in the positive direction along a straight highway and accelerates at a constant rate while going from point A t
    6·1 answer
  • Explain how it is possible for two different elements to have the same mass number
    10·2 answers
  • What does a 10-dB increase in loudness represent?
    5·1 answer
  • Match each letter to the description
    10·1 answer
  • Why do we use mercury in thermometer​
    13·1 answer
  • Which of the following cabinet departments protests us from terrorist attacks?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!