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What is the acceleration of the mass along the table?

  • Thread starter lennyp
  • Start date
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1. Homework Statement
A 10.0 kg mass, m1, on a frictionless table is accelerated by a 5.0 kg mass, m2, hanging over the edge of the table. What is the acceleration of the mass along the table?

2. Homework Equations
F=ma
W=mg


3. The Attempt at a Solution
Can someone atleast point me in the right direction?
 

PhanthomJay

Science Advisor
Homework Helper
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1. Homework Statement
A 10.0 kg mass, m1, on a frictionless table is accelerated by a 5.0 kg mass, m2, hanging over the edge of the table. What is the acceleration of the mass along the table?

2. Homework Equations
F=ma
W=mg


3. The Attempt at a Solution
Can someone atleast point me in the right direction?
You need to draw a free body diagram of each mass, and note that the tension in the cord between the 2 masses have the same magnitude of pull on each mass, and that each mass must have the same magnitude of acceleration. You'll have to solve 2 equations with 2 unknowns and use newton's second law. Please show some of your work so we can assist further.
 
4
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since there is no friction will it move at the same speed as the 5 kg object and since the 5 kg object is hanging its moving at 9.8 m/s squared?
 
682
1
no... consider the two objects as a whole system. what is the total net force and total mass?
then from there and:
[tex]F_{\text{net}}=M_{\text{total}}a[/tex]
you will find the acceleration.
 
Re: Acceleration

Fg=mg=5kgx9.8m/s^2
and F=mg=ma so a=f:10kg
 
1,132
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Re: Acceleration

since there is no friction will it move at the same speed as the 5 kg object and since the 5 kg object is hanging its moving at 9.8 m/s squared?
Even if there was friction, both will move with same speed. And 9.8 m/s2 is just acceleration die to gravity, you forgot to include tension!!!
 

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