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

Author Question: Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a ... (Read 123 times)

jCorn1234

  • Hero Member
  • *****
  • Posts: 545
on: Jul 28, 2018
Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a frictionless level surface. Attached to the 9.0-kg mass is another light string, which a person uses to pull both blocks horizontally. If the two-block system accelerates at 0.80 m/s2, what is the tension in the second string attached to the 9.0-kg mass?
 a. 23 N
  b. 14 N
  c. 16 N
  d. 7.2 N
  e. 25 N

Question 2

Two blocks of masses 30.0 kg and 8.0 kg are connected together by a light string and rest on a frictionless level surface. Attached to the 8.0-kg mass is another light string, which a person uses to pull both blocks horizontally. If the two-block system accelerates at 0.60 m/s2 what is the tension in the connecting string between the blocks?
 a. 23 N
  b. 37 N
  c. 18 N
  d. 4.8 N
  e. 50 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Li Jun

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

c


jCorn1234

  • Hero Member
  • *****
  • Posts: 545
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Li Jun

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Absorption of light energy by an electron Absorption of light energy by an electron
Two Scottish reindeer relax after pulling Santa's sleigh at the switching on of Christmas light Two Scottish reindeer relax after pulling Santa's sleigh at the switching on of Christmas light
pupil light reaction pupil light reaction
Air flows through the PCV valve during idle, cruising, and light-load conditions. Air flows through the PCV valve during idle, cruising, and light-load conditions.
Air masses interact to produce weather Air masses interact to produce weather
A racing car accelerates uniformly from rest along a straight track. This track has markers ... A racing car accelerates uniformly from rest along a straight track. This track has markers ...
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library