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Mechanics

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Joined:	11 Mar 2007
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11 Mar 2007 17:43:32 IST

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498

a good sum for iit aspirants. well this is one from COM,CONSERVATION OF LINEAR MOMENTUM N

Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Physics , Mechanics

A TROLLEY CARRRYING A MAN IS MOVING WITH A VELOCITY V m/s.

IF THE MAN STARTS RUNNING A T A SPEED OF 3V/2 m/s WRT THE TROLLEY & ON REACHING THE OTHER END TURNS BACK & COMES BACK WITH SAME VELOCITY, FIND THE DISPLACEMENT OF THE MAN WRT EARTH DURING THE WHOLE PROCESS.

WEIGHT OF MAN = WEIGHT OF TROLLEY.

LENTH OF TROLLEY = L

WELL ! THIS IS A 3 LINE ANSWER!

JUST TRY!

Comments (3)

vineet

Hot goIITian

Joined: 11 Dec 2006

Posts: 172

11 Mar 2007 18:10:13 IST

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as the person moves towards left trolly moves towards right ,so COM shud change its position.Keeping this as base solve the problem

jalanshruti

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Joined: 31 Dec 2006

Posts: 31

11 Mar 2007 18:30:27 IST

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hey i got ans as 4/3 L is it correct

jalanshruti

Cool goIITian

Joined: 31 Dec 2006

Posts: 31

11 Mar 2007 18:34:29 IST

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waiting for ans

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