Calculating Acceleration with Force and Mass

Click For Summary
SUMMARY

The discussion focuses on calculating the acceleration of a weather balloon system with a mass of 4.8 kg and an upward force of 109 N. The initial calculation using the formula F = ma yielded an acceleration of 22.7 m/s². However, the correct approach requires considering all forces acting on the system, specifically the gravitational force acting downward. The missing force must be included to accurately determine the net force and, consequently, the correct acceleration.

PREREQUISITES
  • Understanding of Newton's Second Law (F = ma)
  • Basic knowledge of forces, including gravitational force
  • Ability to perform unit conversions and calculations with Newtons and kilograms
  • Familiarity with free-body diagrams to visualize forces
NEXT STEPS
  • Review the concept of net force and how to calculate it in multi-force systems
  • Study gravitational force calculations and their impact on acceleration
  • Learn about free-body diagrams and their role in physics problem-solving
  • Explore advanced applications of Newton's laws in different contexts, such as projectile motion
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in mastering the principles of force and motion, particularly in relation to acceleration calculations in systems influenced by multiple forces.

saychanh
Messages
4
Reaction score
0

Homework Statement



The instruments attached to a weather balloon in the figure below have a mass(m) of 4.8 kg. The balloon is released and exerts an upward force(F) of 109 N on the instruments. What is the acceleration of the balloon and instruments?


Homework Equations



F = ma

The Attempt at a Solution



F = ma
109N = (4.8 kg)(a)
a = 109N / 4.8kg
a = 22.7 m/s^2

I got this answer, but its not the right answer.
 
Physics news on Phys.org
Remember that it is the sum of the forces that equals ma. You have not added up all the forces. There is one very important force that you have forgot about. What else is pulling on the system?
 
oh right, i got it. thank you
 

Similar threads

  • · Replies 21 ·
Replies
21
Views
2K
Replies
2
Views
2K
Replies
13
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 13 ·
Replies
13
Views
2K
Replies
17
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 6 ·
Replies
6
Views
3K