Moment of Inertia of a Trebechet

Thread starter TheNextOne21
Start date May 19, 2010

AI Thread Summary

To compute the moment of inertia of a trebuchet, the relevant equation is I = Σ mi * ri^2, where mi represents the mass of each component and ri is the distance from the pivot point. The total mass includes the bucket with 63 pennies (182 gm), the projectile (1 gm), and the arm (3 gm), with the arm measuring 24.6 cm. Participants in the discussion suggest inputting the various masses and their respective distances into the formula to calculate the moment of inertia. The conversation emphasizes the importance of correctly applying the equation to achieve the desired result.

May 19, 2010

TheNextOne21

Homework Statement

Mass of bucket and 63 pennies - 182 gm
Mass of projectile - 1 gm
Mass of arm - 3 gm

the total length of the arm is 24.6 cm

Compute the oment of inertia of the trebechet

Homework Equations

I = Ei mi * ri^2

The Attempt at a Solution

how do i start this equation?

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May 19, 2010

tiny-tim

Science Advisor

Homework Helper

(do you mean I = ∑_i m_i* r_i² ?)

Just put the various masses and distances into the formula …

what do you get?

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