This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A 2.0-kg mass swings at the end of a light string (length = 3.0 m). Its speed at the lowest point on ... (Read 105 times)

cabate

  • Hero Member
  • *****
  • Posts: 537
on: Jul 28, 2018
A 2.0-kg mass swings at the end of a light string (length = 3.0 m). Its speed at the lowest point on its circular path is 6.0 m/s. What is its kinetic energy at an instant when the string makes an angle of 50 with the vertical?
 a. 21 J
  b. 15 J
  c. 28 J
  d. 36 J
  e. 23 J

Question 2

A pendulum is made by letting a 2.0-kg object swing at the end of a string that has a length of 1.5 m. The maximum angle the string makes with the vertical as the pendulum swings is 30. What is the speed of the object at the lowest point in its trajectory?
 a. 2.0 m/s
  b. 2.2 m/s
  c. 2.5 m/s
  d. 2.7 m/s
  e. 3.1 m/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sarahjh

  • Sr. Member
  • ****
  • Posts: 370
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


cabate

  • Member
  • Posts: 537
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

ktidd

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

POWER POINT PRESENTATION logo POWER POINT PRESENTATION logo
All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ... All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ...
. Calculate the net electric field at point B . Calculate the net electric field at point B
Find the length of DE to one decimal place Find the length of DE to one decimal place
Summary of the effects on transcription levels of different point mutations Summary of the effects on transcription levels of different point mutations
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g? What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g?
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library