A compound pendulum pivoted at O consists of a hollow-disk of radius R-40 +2da em with a hole of radius 20 cm and a thin rod (1.2 kg, total length = 30 cm) atached on the top. Given the mas density of the hollow disk is 4 kg'm'. 60 cm 20 cm 30 cm 40 cm R-40 + 2-di cm (a) Find the rotational inertia / of the compound pendulum at an axis passing through the plane of paper and the pivot O. (b) Find the distance hm of the center of mass of the compound pendulum from pivot O. (c) Find the angular frequency e (d) Find the period 7.
A compound pendulum pivoted at O consists of a hollow-disk of radius R-40 +2da em with a hole of radius 20 cm and a thin rod (1.2 kg, total length = 30 cm) atached on the top. Given the mas density of the hollow disk is 4 kg'm'. 60 cm 20 cm 30 cm 40 cm R-40 + 2-di cm (a) Find the rotational inertia / of the compound pendulum at an axis passing through the plane of paper and the pivot O. (b) Find the distance hm of the center of mass of the compound pendulum from pivot O. (c) Find the angular frequency e (d) Find the period 7.
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Transcribed Image Text:A compound pendulum pivoted at O consists of a hollow-disk of radius R-40 +2da em with a
hole of radius 20 cm and a thin rod (1.2 kg, total length = 30 cm) atached on the top. Given the mas
density of the hollow disk is 4 kg'm'.
60 cm
20 cm
30 cm
40 cm
R-40 + 2-di cm
(a) Find the rotational inertia / of the compound pendulum at an axis passing through the plane of
paper and the pivot O.
(b) Find the distance hm of the center of mass of the compound pendulum from pivot O.
(c) Find the angular frequency e
(d) Find the period 7.
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