Newton's Second Law and jetpacks

  • Thread starter suspenc3
  • Start date
  • #1
402
0
Three astronauts, propelled by jetpacks, push a 120kg asteroid toward a processing dock, exerting the forces
F1 = 32N at 30 degrees above the horizontal
F2 = 55N on the horizontal
F3 = 41N below 60 degrees below the horizontal

what is the asteroids acceleration in unit vector notation?

m = 120kg
F2 = (5N)i

F1+F2+F3 = ma

F1 = (32N cos30deg) , (32N sin30deg)
F1 = (27.7)i + 16j

F3 = (41N cos-60deg) , (41N sin-60deg)
F3 = (20.5N)i - (35.5N)j

Fnet = ma
Fnet/m = a
(27.7/120 +55 + 20.5/120)i , (-35.5/120 + 16/120)j = a

Is this right so far?
 
Last edited:

Answers and Replies

  • #2
Fermat
Homework Helper
872
1
Apart from a couple of typos, yes it's correct.
 

Related Threads on Newton's Second Law and jetpacks

  • Last Post
Replies
20
Views
884
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
8
Views
930
  • Last Post
Replies
3
Views
974
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
7
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
4
Views
655
Top