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manaXmizery
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Homework Statement
A 1.5 kg block rests on top of a 7.5 kg block which are attached using a cord to a pulley - there is no friction anywhere. What force must be applied to the bottom block so the top block accelerates to the right at 2.5 m/s^2?
Homework Equations
m1 = 1.5kg
a(to the right) = 2.5 m/s^2
m2 = 7.5kg
The Attempt at a Solution
Since we are interested in finding the horizontal force F , I neglected all the forces acting vertically on the two blocks mainly the normal Force , Fn and the weights of them . Am i right in assuming that :
1) there is no friction between the two blocks and as such , the only force acting horizontally on the top block is the tension Ft towards the right ?
2) for the bottom block , I have to assume that the force towards the left , F must be greater than the tension , Ft ?
Thanks in advance.
Regards,
Steve