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physics help needed

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cashem'up:

--- Quote from: hetarth on May 16, 2010, 12:50:21 pm ---ok kk listen up when the weight  pulls the beam downwards the side at which x and y lie on have been stretched so tension applies there .....so answer is b

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can u be more specific in terms of moments or etc....

cashem'up:

--- Quote from: ima_shah2002 on May 16, 2010, 12:09:34 pm ---hey june 2007 q20......dont get it please explain....... by the way cie.....Thanks
 ;)


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astarmathsandphysics...........sir can  u please help me out wid these questions.....Thanks

halosh92:
june 2009 p1 cie
Q10
Q13
explain plz

astarmathsandphysics:
10 from conservation of momentum speed of X is twice speed of Y since mass of X is half mass of Y
do (1/2 m (2v)^2)/(1/2 2m b^") =2
13 moments about spindle 0.2*900 =9.6F so F=300

halosh92:

--- Quote from: astarmathsandphysics on May 16, 2010, 07:44:38 pm ---10 from conservation of momentum speed of X is twice speed of Y since mass of X is half mass of Y
do (1/2 m (2v)^2)/(1/2 2m b^") =2
13 moments about spindle 0.2*900 =9.6F so F=300

--- End quote ---

thankyou but Q13: answer is 150N

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