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1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A girl of mass M stands on the rim of a frictionless merry-go-round of radius R and rotational inertia I, that is not moving. She throws a rock of mass m horizontally in a direction that is tangent to the outer edge of the merry-go-round. The speed of the rock, relative to the ground is v. Afterwards, the linear speed of the girl is

A
$$\frac{m v R^2}{I+M R^2}$$
B
$$\frac{(m+M) v R^2}{I+M R^2}$$
C
$$\frac{m v R^2}{I+(M+m) R^2}$$
D
$$\frac{m v R^2}{I+(M-m) R^2}$$
2
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following type of wheels of same mass and radius will have largest moment of inertia?

A
Ring
B
Angular disc
C
Solid disc
D
Cylindrical disc
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