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A particle of mass 5kg is pulled along a smooth horizontal surfce by a horizontal string> if the acc of particle is 3ms2find the tension
 one year ago
 one year ago
A particle of mass 5kg is pulled along a smooth horizontal surfce by a horizontal string> if the acc of particle is 3ms2find the tension
 one year ago
 one year ago

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zaphodBest ResponseYou've already chosen the best response.0
@Callisto can i kw hw to apply the forces?
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
dw:1347114640040:dw Consider the horizontal, Summation F = T = ma = 5(3), isn't it?
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
dw:1347114778579:dw The vertical forces cancel out..
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
Note that smooth = friction = 0N Note sure if I'm in the right direction :
 one year ago

zaphodBest ResponseYou've already chosen the best response.0
yes dw:1347114907153:dw
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
Why did you add that T?
 one year ago

zaphodBest ResponseYou've already chosen the best response.0
in a horizontal string tension acts oppostely
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
Hmm.. I'm actually considering this part..dw:1347115073162:dw
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
For that system, weight is balanced by the normal reaction. So, vertical forces cancel. Consider the horizontal force, since the surface is 'smooth', there is no friction acting on the particle. The only horizontal force acting on the system is tension. So, by Newton's 2nd law, T  f = ma , where f = 0, m=5 and a=3 So, you can find T.
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
f= 0N, m=5kg and a=3ms^2
 one year ago

zaphodBest ResponseYou've already chosen the best response.0
:) get it why is force = 0
 one year ago

keilyBest ResponseYou've already chosen the best response.0
Tension=5kg times 3m/s=15N
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
f is friction acting on the system by the surface. But the surface is smooth, so no friction acting on the system
 one year ago

zaphodBest ResponseYou've already chosen the best response.0
i thought there is an external force making the particle move, anyway nw i understnd
 one year ago

CallistoBest ResponseYou've already chosen the best response.3
That external force is the tension. If you don't pull the string, there is no tension, the block doesn't move. Perhaps you can consider that system only. I mean the force applied to that system.
 one year ago

zaphodBest ResponseYou've already chosen the best response.0
yes thanks u so much :)
 one year ago
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