Net forces

  • Thread starter Hafsaaa
  • Start date
  • #1
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Homework Statement


What is the net force acting on a 5kg suitcase when picked up with 60N of force? what is the applied force? What is the acceleration of the suitcase?



Homework Equations


ma=?



The Attempt at a Solution


I'm not even sure on how to start the equation all I know is ma=
 

Answers and Replies

  • #2
The force upwards is 60N, the force downward is simply (5kg)(9.8m/s^2), or weight times gravity to give you force, since gravity is acting on the suitcase.

So, the upward force of 60N minus the downward force of 49N (from 5*9.8), and you get 11N in the positive upward direction.

ma = 11N

a = 11N / 5kg = 2.2 m/s^2 (in the upwards positive direction)
 

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