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 –

A Planet Orbit in an Elliptical Path

Choices

Choice (4)Response

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b.

c.

d.

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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 .

Arrangement of Seven Identical Coins

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

a.

b.

c.

d.

Edit

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 –

Small Mass Connected to String, Which Attached to Vertical Post

Choices

Choice (4)Response

a.

b.

c.

d.

Edit