Qualification > Math

need help in M1

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astarmathsandphysics:
THANKS

halosh92:

--- Quote from: astarmathsandphysics on January 14, 2010, 01:26:50 pm ---Resultant force on car=100-400-F=ma=800a s0 F=-300-800a (1)
You need the acceleration to find F
Find this by looking at the triler
F=ma
-100-200=200a s0 a=-1.5

sub into (1) F=-300-800*-1.5=900N



--- End quote ---

i have a question , why dont we consider the tension in our calculations?
and one more question: wat do they mean by thrust of the towbar? in which direction is it, why is it in a different direction in the second formula?????
plz answer ASAP

M-H:
sirrrrrrr i hav the same ques...?????
hw n y do u ignore the tension???????????????? plzzzzzzz rply asap!!!

astarmathsandphysics:
I think the tension is 100. Not at home now.

halosh92:

--- Quote from: astarmathsandphysics on May 05, 2010, 11:42:32 am ---I think the tension is 100. Not at home now.

--- End quote ---

nop thats not the tension

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