Newton's Laws with a Pulley, with tension, Force

  • Thread starter mandragora
  • Start date
  • #1

Homework Statement


If F = 8.0 N and M = 1.0 kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
16aznmv.jpg



Homework Equations


F=ma


The Attempt at a Solution


8-T=2a (2kg block)
T - 1cos10??? = 1a (for the 1kg block. I got stuck here, the angle threw me off)

Thanks!
 

Answers and Replies

  • #2
PhanthomJay
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Homework Statement


If F = 8.0 N and M = 1.0 kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
16aznmv.jpg



Homework Equations


F=ma


The Attempt at a Solution


8-T=2a (2kg block)
this is good
T - 1cos10??? = 1a (for the 1kg block. I got stuck here, the angle threw me off)

Thanks!
You must first convert mass to weight, and calculate the weight force component acting down the plane (the weight acts straight down, and you can find its components parallel to and perpendicular to the incline). Your trig function is incorrect,,,you will have to do a little geometry to calculate the weight component acting parallel to the plane.
 

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