# Yet Another M1 Question I'm Stuck On :(Watch

#1
Ahhh~ going through M1 questions in my textbook is starting to stress me out when i can't seem to get around a question even with looking back at examples D:

but for this question i don't even know what to use?
F=ma?

A hot-air balloon, its occupants and ballast have total mass 2000kg. The balloon is travelling horizontally with constant velocity. The occupants release 100kg of ballast. Neglecting air resistance, find the magnitude of the acceleration of the balloon.

do i use F=ma to solve this question? D:
0
7 years ago
#2
What you need to do here is consider the forces acting on the balloon - lift and weight. When the ballast is removed, the weight is reduced so the net force changes from zero to some value upwards. It might help to draw a diagram:
1
#3
(Original post by ttoby)
What you need to do here is consider the forces acting on the balloon - lift and weight. When the ballast is removed, the weight is reduced so the net force changes from zero to some value upwards. It might help to draw a diagram:
Thanks alot dude~ managed to work it out now ^^
i completely forgot about taking lift into account (:
diagrams really help ^^ thanks [:
0
X

new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Cardiff Metropolitan University
Sat, 27 Apr '19
• University of East Anglia
Could you inspire the next generation? Find out more about becoming a Primary teacher with UEA… Postgraduate
Sat, 27 Apr '19
• Anglia Ruskin University
Health, Education, Medicine and Social Care; Arts, Humanities and Social Sciences; Business and Law; Science and Engineering Undergraduate
Sat, 27 Apr '19

### Poll

Join the discussion

#### Have you registered to vote?

Yes! (546)
37.73%
No - but I will (113)
7.81%
No - I don't want to (100)
6.91%
No - I can't vote (<18, not in UK, etc) (688)
47.55%