Author Question: Two blocks are at rest on a horizontal frictionless surface with a compressed spring between them. ... (Read 180 times)

eruditmonkey@yahoo.com

  • Hero Member
  • *****
  • Posts: 546
Two blocks are at rest on a horizontal frictionless surface with a compressed spring between them. The 15.0-kg block accelerates when the string holding the system in compression is cut and the 30.0-kg box accelerates in the opposite direction. What is the magnitude of the force from the expanding spring on the 30.0-kg box when the 15.0-kg box is undergoing an acceleration of 5.00 m/s2?
 a. 37.5 N
  b. 150 N
  c. 225 N
  d. 75.0 N
  e. 0 N

Question 2

A 16.0-kg mass and a 2.25-kg mass are connected by a light string over a massless, frictionless pulley. If g = 9.8 m/s2, what is the acceleration of the system when released?
 a. 13.0 m/s2
  b. 7.38 m/s2
  c. 179 m/s2
  d. 9.80 m/s2
  e. 1.86 m/s2



livaneabi

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

d

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

For a complete list of videos, visit our video library