Rotational Motion [NEST (National Entrance Screening Test-NISER) Physics]: Questions 1 - 3 of 17
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Question 1
Appeared in Year: 2012
Question MCQ▾
A planet orbits in an elliptical path of eccentricity e around a massive star considered fixed at one of the foci. The point in space where it is closest to the star is denoted by P and the point where it is farthest is denoted by A. Let VP and VA are be the respective speeds at P and A. Then –
Choices
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a. | ||
b. | ||
c. | ||
d. |
Question 2
Appeared in Year: 2012
Question MCQ▾
Seven identical coins are rigidly arranged on a flat table in the pattern shown below so that each coin touches its neighbors. Each coin is a thin disc of mass m and radius r. Note that the moment of inertia of an individual coin about an axis passing through center and perpendicular to the plane of the coin is .
The moment of inertia of the system of seven coins about an axis that passes through the point P (the centre of the coin positioned directly to the right of the central coin) and perpendicular to the plane of the coins is-
Choices
Choice (4) | Response | |
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b. | ||
c. | ||
d. |
Question 3
Appeared in Year: 2011
Question MCQ▾
Figure below shows a small mass connected to a string, which is attached to a vertical post. If the ball is released when the string is horizontal as shown, the magnitude of the total acceleration (including radial and tangential) of the mass as a function of the angle θ is –
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |