Centripetal Force | Multiple Questions and Answers

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Centripetal Force Multiple Questions and Answers.

6.	The moment of inertia of a uniform circular disc about its diameter is 100 gcm2. What is its moment of inertia about an axis perpendicular to its plane.

	A.	500 gcm²
	B.	100 gcm²
	C.	200 gcm²
	D.	700 gcm²

7.	Calculate the moment of inertia of the earth about its diameter, taking it to be a sphere of 1025kg and diameter 12800km.

	A.	1.64 kgm²
	B.	16.4Ã—1038 kgm²
	C.	1.64Ã—1038 kgm²
	D.	0

8.	A torque of 2Ã—10^{-4^{Nm is applied to produce an angular acceleration of 4rad/s² in a rotating body. What is the moment of inertia of the body?}}

	A.	0.5 kgm²
	B.	5Ã—104 kgm²
	C.	0.5Ã—10-4 kgm²
	D.	0.5Ã—104 kgm²

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