## Re: [math_club] velocity & accelerat

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• i am not sure but i thought the velocity of a revolving particle is zero because the displacement of such a particle is zero. but i am saying once again that i
Message 1 of 13 , Jun 4, 2007
i am not sure but i thought the velocity of a revolving particle is zero because the displacement of such a particle is zero. but i am saying once again that i am not sure. i have read all these so many years ago. :(

murshid

On 6/3/07, Tanvir Ahamed Bhuyain <tanvirabs@...> wrote:

a revolving body has both angular velocity and linear velocity. the linear velocity works along the tangent of the path......... i am not sure if the velocity of a revolving body can be zero or not........

Tanvir

Nasa <nasarouf@...> wrote:

well, theoretically it has neither velocity nor acceleration. it has an 'angular' velocity.

On 6/2/07, Murshid Islam < murshid.islam@...> wrote:
what if a particle is revolving at one point?

murshid.

On 6/2/07, Sufian Latif < slbonny@...> wrote:
it's also possible for a particle moving with simple harmonic motion at the amplitude position.

Nasa <nasarouf@...> wrote:
consider a projectile thrown vertically when at the highest point

On 5/31/07, promit_euhss < promit_euhss@... > wrote:
if the velocity of something is 0.is dat possible the acceleration
wont b 0.
promit.

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• the displacement of a revolving particle is not zero.............. if the radius of it s path is r and it transverses a angle A (which is the angular
Message 2 of 13 , Jun 4, 2007
the displacement of a revolving particle is not zero.............. if the radius of it's path is "r" and it transverses a angle "A"(which is the angular displacement) then it's linear displacement is "S = r * A" (the simple redian formula we all know)...

Tanvir

Murshid Islam <murshid.islam@...> wrote:
i am not sure but i thought the velocity of a revolving particle is zero because the displacement of such a particle is zero. but i am saying once again that i am not sure. i have read all these so many years ago. :(

murshid

On 6/3/07, Tanvir Ahamed Bhuyain <tanvirabs@yahoo. com> wrote:
a revolving body has both angular velocity and linear velocity. the linear velocity works along the tangent of the path........ . i am not sure if the velocity of a revolving body can be zero or not........

Tanvir

Nasa <nasarouf@gmail. com> wrote:
well, theoretically it has neither velocity nor acceleration. it has an 'angular' velocity.

On 6/2/07, Murshid Islam < murshid.islam@ gmail.com> wrote:
what if a particle is revolving at one point?

murshid.

On 6/2/07, Sufian Latif < slbonny@yahoo. com> wrote:
it's also possible for a particle moving with simple harmonic motion at the amplitude position.

Nasa <nasarouf@gmail. com> wrote:
consider a projectile thrown vertically when at the highest point

On 5/31/07, promit_euhss < promit_euhss@ yahoo.com > wrote:
if the velocity of something is 0.is dat possible the acceleration
wont b 0.
promit.

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• however, displacement means the change of location of the CG . if the center of revolution is the CG then clearly, there is no displacement, hence zero
Message 3 of 13 , Jun 4, 2007
however, 'displacement' means the 'change of location of the CG'.

if the center of revolution is the CG then clearly, there is no displacement, hence zero velocity and acceleration :)

but if the center of revolution is not the CG then the particle does have a 'speed' and a 'constantly direction changing' velocity and hence a constant acceleration.

more: http://en.wikipedia.org/wiki/Angular_momentum

On 6/4/07, Tanvir Ahamed Bhuyain < tanvirabs@...> wrote:

the displacement of a revolving particle is not zero.............. if the radius of it's path is "r" and it transverses a angle "A"(which is the angular displacement) then it's linear displacement is "S = r * A" (the simple redian formula we all know)...

Tanvir

Murshid Islam <murshid.islam@gmail.com> wrote:

i am not sure but i thought the velocity of a revolving particle is zero because the displacement of such a particle is zero. but i am saying once again that i am not sure. i have read all these so many years ago. :(

murshid

On 6/3/07, Tanvir Ahamed Bhuyain <tanvirabs@...> wrote:
a revolving body has both angular velocity and linear velocity. the linear velocity works along the tangent of the path......... i am not sure if the velocity of a revolving body can be zero or not........

Tanvir

Nasa <nasarouf@...> wrote:
well, theoretically it has neither velocity nor acceleration. it has an 'angular' velocity.

On 6/2/07, Murshid Islam <murshid.islam@...> wrote:
what if a particle is revolving at one point?

murshid.

On 6/2/07, Sufian Latif <slbonny@...> wrote:
it's also possible for a particle moving with simple harmonic motion at the amplitude position.

Nasa <nasarouf@...> wrote:
consider a projectile thrown vertically when at the highest point

On 5/31/07, promit_euhss <promit_euhss@... > wrote:
if the velocity of something is 0.is dat possible the acceleration
wont b 0.
promit.

Pinpoint customers who are looking for what you sell.

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• yes, you are right...... I was only considering a discreet body revolving about a discrete center......... as example, an electron around a proton............
Message 4 of 13 , Jun 6, 2007
yes, you are right...... I was only considering a discreet body revolving about a discrete center......... as example, an electron around a proton............

Tanvir

Nasa <nasarouf@...> wrote:
however, 'displacement' means the 'change of location of the CG'.

if the center of revolution is the CG then clearly, there is no displacement, hence zero velocity and acceleration :)

but if the center of revolution is not the CG then the particle does have a 'speed' and a 'constantly direction changing' velocity and hence a constant acceleration.

more: http://en.wikipedia .org/wiki/ Angular_momentum

On 6/4/07, Tanvir Ahamed Bhuyain < tanvirabs@yahoo. com> wrote:
the displacement of a revolving particle is not zero........ ...... if the radius of it's path is "r" and it transverses a angle "A"(which is the angular displacement) then it's linear displacement is "S = r * A" (the simple redian formula we all know)...

Tanvir

Murshid Islam <murshid.islam@gmail.com> wrote:
i am not sure but i thought the velocity of a revolving particle is zero because the displacement of such a particle is zero. but i am saying once again that i am not sure. i have read all these so many years ago. :(

murshid

On 6/3/07, Tanvir Ahamed Bhuyain < tanvirabs@yahoo. com> wrote:
a revolving body has both angular velocity and linear velocity. the linear velocity works along the tangent of the path........ . i am not sure if the velocity of a revolving body can be zero or not........

Tanvir

Nasa <nasarouf@gmail. com> wrote:
well, theoretically it has neither velocity nor acceleration. it has an 'angular' velocity.

On 6/2/07, Murshid Islam < murshid.islam@ gmail.com> wrote:
what if a particle is revolving at one point?

murshid.

On 6/2/07, Sufian Latif < slbonny@yahoo. com> wrote:
it's also possible for a particle moving with simple harmonic motion at the amplitude position.

Nasa <nasarouf@gmail. com> wrote:
consider a projectile thrown vertically when at the highest point

On 5/31/07, promit_euhss < promit_euhss@ yahoo.com > wrote:
if the velocity of something is 0.is dat possible the acceleration
wont b 0.
promit.

Pinpoint customers who are looking for what you sell.

Send instant messages to your online friends http://uk.messenger.yahoo.com

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