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Mechanics

Scorching goIITian

Joined:	25 Jan 2009
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23 Feb 2009 18:44:42 IST

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is pulling easier or pushing and why?

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is pulling easier or pushing and why?

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A$PIRing HiGh - dEv aDitYa

Blazing goIITian

Joined: 13 Mar 2008

Posts: 540

23 Feb 2009 18:48:12 IST

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pushing

Anirudh Kumar

Scorching goIITian

Joined: 25 Jan 2009

Posts: 246

23 Feb 2009 18:50:47 IST

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please explain

navneet singh

Blazing goIITian

Joined: 7 Feb 2008

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23 Feb 2009 18:53:42 IST

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bcoz in pulling net force downwards is more as compared to pushing. this reduces normal rec. force and hence friction

AViK

Blazing goIITian

Joined: 5 Sep 2008

Posts: 953

23 Feb 2009 18:55:44 IST

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Pulling... n N = F sin@

=> n{mg - Fcos@} = Fsin@ (n is the coeff. of fricion)

=> F = nmg/ {sin@ + ncos@}....(1)

Pushing... n N = Fsin@

=> n{ mg + cos@} = Fsin@

=> F =nmg /{sin@- ncos@}.....(2)

Comparing (1) & (2)..v can see tht force 2b applied fr Pushing is certainly more...

Hope it helps...

Murali G

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Joined: 15 Jul 2007

Posts: 395

23 Feb 2009 19:08:04 IST

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