- #1

tubworld

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How do i find the angular momentum of the system relative to the centre of the mass? I have found the centre of mass already. It's 10.7cm from the perimeter of the small puck.

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- Thread starter tubworld
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- #1

tubworld

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How do i find the angular momentum of the system relative to the centre of the mass? I have found the centre of mass already. It's 10.7cm from the perimeter of the small puck.

- #2

gnpatterson

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Firstly

Consider the distance of the centre of gravity from the centre of the first (moving puck) that might help

Consider the distance of the centre of gravity from the centre of the first (moving puck) that might help

Last edited:

- #3

tubworld

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- #4

Doc Al

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Realize that the COM of the system istubworld said:How do i find the angular momentum of the system relative to the centre of the mass? I have found the centre of mass already. It's 10.7cm from the perimeter of the small puck.

- #5

tubworld

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- #6

Doc Al

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Start by finding the speed of the center of mass.

- #7

tubworld

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talking abt the linear speed right?

- #8

Doc Al

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- #9

tubworld

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- #10

tubworld

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Pls Help@ Urgent! Thanx!

- #11

Doc Al

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- #12

tubworld

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- #13

Doc Al

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Big hint:

Horizontal position of center of mass:

[tex]M_{total} x_{cm} = m_1 x_1 + m_2 x_2[/tex]

Horizontal speed of center of mass:

[tex]M_{total} v_{cm} = m_1 v_1 + m_2 v_2[/tex]

- #14

tubworld

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ur x here is measured relative to?

- #15

Doc Al

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- #16

tubworld

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Oh yeah I got that thks! But its really darn long... .. :(

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