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Deformation force - Oct 29, 2004 at 3:59AM
Fresher 3 Posts	Can someone please help me out on the below problem? PROBLEM: How do we find out the force exerted by A on B ? Will the calculation vary if Body B does not deform? SITUATION: Body A hits body B causing a deformation of body B. Assume B is a cuboid. Known values: 1) Mass of body A 2) Mass of body B 3) Velocity before impact of body A 4) Velocity before impactof body B 5) Dimensions of the B before and after impact (for simplicity sake, let's assume that B has reduced in length by x meters and there is no other change in the dimension) 6) Assume that both body A & B come to rest after impact. Thanks in Advance. Login to reply

Replies to Deformation force

Re: Deformation force - Oct 29 2004 9:44AM
Dave San Marcos, Texas 308 Posts	I need a little clarification. Do both bodies come to rest immediately after the collision, or after traveling some distance? Dave Try not to become a man of success, but rather try to become a man of value -- Albert Einstein Login to reply \| Condense

Re: Deformation force - Oct 29 2004 9:44AM

Dave
San Marcos, Texas
308 Posts

I need a little clarification. Do both bodies come to rest immediately after the collision, or after traveling some distance?

Dave

Try not to become a man of success, but rather try to become a man of value -- Albert Einstein

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Re: Re: Deformation force - Nov 03 2004 7:52AM
Fresher 3 Posts	Both bodies come to rest immediately after collision. Like say, when a car goes and hits a tree......something like that. Thanks ! Login to reply \| Condense

Re: Re: Re: Deformation force - Nov 03 2004 11:18AM
Dave San Marcos, Texas 308 Posts	Assuming A is not deformed, you can use energy considerations to find the force on B. Dave Try not to become a man of success, but rather try to become a man of value -- Albert Einstein Login to reply \| Condense

Re: Re: Re: Deformation force - Nov 03 2004 11:18AM

Dave
San Marcos, Texas
308 Posts

Assuming A is not deformed, you can use energy considerations to find the force on B.

Dave

Try not to become a man of success, but rather try to become a man of value -- Albert Einstein

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Re: Deformation force - Nov 05 2004 8:12AM
Fresher 3 Posts	Does it mean that there would be no difference in the calculation, when Body B deforms and when it does not? And what would be difference if Body A too had deformed during the collision? Thanks ! Login to reply \| Condense

Re: Re: Deformation force - Nov 05 2004 9:31AM
Dave San Marcos, Texas 308 Posts	If both objects come to rest, something had to happen to their kinetic energy. If only B deforms, all of the energy went into B. If both objects deform, energy went to both. If neither deforms, the energy must have gone somewhere else. Dave Try not to become a man of success, but rather try to become a man of value -- Albert Einstein Login to reply \| Condense

Re: Re: Deformation force - Nov 05 2004 9:31AM

Dave
San Marcos, Texas
308 Posts

If both objects come to rest, something had to happen to their kinetic energy. If only B deforms, all of the energy went into B. If both objects deform, energy went to both. If neither deforms, the energy must have gone somewhere else.

Dave

Try not to become a man of success, but rather try to become a man of value -- Albert Einstein

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