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Question

# Figures I and 2 below show a meter stick,half of which is wood and half of which is steel . (steel is demser thin wood). In figure1:. the stick is pivoted at the wooden end, at O and a force F is is applied to the steel end . In figure 2, the stick is pivoted at the steel end, at O,and identical force is applied to the wooden end. (Neglect Gravity)

A
The angular acceleration will be greter for the stick in figure 1, because the torque about O is greter than the torque about O:
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B
The angular acceleration will be greter for the stick in figure 2, because the torque about O is greter than the torque about O
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C
The angular acceleration will be greter for the stick in figure 1 because the rotational inertia about O is smaller than the rotational ineritia about O is smaller than the rotational than the inertia about O
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D
The angular acceleration will be grater for the stick in figure 2 because the rotational inertia about 'O' is smaller than rotational inertia about O.
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Solution

## The correct option is C The angular acceleration will be greter for the stick in figure 1 because the rotational inertia about O is smaller than the rotational ineritia about O is smaller than the rotational than the inertia about OSteel is denser than wood.τ=Iα=f×dI= moment of inertiaIαrr=location of earn from the rotation axis.∴ Ig figure 1 is greater.So, αg figure 1 is less.

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