anonymous
  • anonymous
An object of mass m has an an accleration of magnitude a, when a force of strength F acts on it (on a frictionless surface). Four other objects on the same surface have the following masses and accelerations: A: Mass = 2m, Acceleration = a/2 B: Mass = m, Acceleration = 2a C: Mass = 2m, Acceleration = a D: Mass = 2m, Acceleration = 2a Which of the options below correctly ranks the strengths of the forces acting on these four objects, from weakest to strongest.
Physics
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SOLVED
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jamiebookeater
  • jamiebookeater
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johnweldon1993
  • johnweldon1993
Hint* \(\large F = ma\)
anonymous
  • anonymous
So all I need to do is multiple the mass and acceleration for all of them? We haven't had this in class yet so I'm not really sure.
johnweldon1993
  • johnweldon1993
That is correct...And you will be learning about it a lot! Newtons 2nd Law..F = ma So yes just multiply and simplify...what do you get?

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anonymous
  • anonymous
A: 4 B:2 C:2 D:4 Would that be right?
anonymous
  • anonymous
Because if that's the case how do you decide which one is bigger when B and C are the same values just like A and D?
johnweldon1993
  • johnweldon1993
Not quite Ex: A) \(\large F = ma\) \(\large F=2m\times \frac{a}{2} = ma\) B) \(\large F = ma\) \(\large F=m\times 2a = 2ma\) *So that should show you that B would be twice as strong of a force as A right? Continue on from there :)
anonymous
  • anonymous
Sorry about the super late reply. So it would be A

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