Rotational Motion (NEET Physics): Questions 89 - 92 of 123

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Question number: 89

» Rotational Motion » Angular Momentum

MCQ▾

Question

An inclined plane makes an angle 45° with the horizontal. A solid sphere rolling down this inclined plane from rest without slipping has a linear acceleration equal to,

Choices

Choice (4) Response
a.

5g72

b.

2g3

c.

5g14

d.

g3

Question number: 90

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Four thin rods of same mass M and same length l form a square as shown in figure. Moment of inertia of this system about an axis through center O and perpendicular to its plane is,

Arrangement of four rod - mass M and same length l

Arrangement of Four Rod - Mass M and Same Length L

In above fig we shows four thin rods of same mass M and same length l, form a square

Choices

Choice (4) Response
a.

23Ml2

b.

Ml26

c.

43Ml2

d.

Ml23

Question number: 91

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A disc is rolling (without slipping) on a horizontal surface. C is its centre and Q and P are two points equidistant from C. Let V P, V Q and V C be the magnitude of velocities of points P, Q and C respectively, then

Disc rolling on a horizontal surface point P and Q.

Disc Rolling on a Horizontal Surface Point P and Q.

In above figure we shows that disc is rolling on a horizontal surface, C is center of P and Q point.

Choices

Choice (4) Response
a.

VQ<VC<VP

b.

VQ=VPVC=VP2

c.

VQ<VC>VP

d.

VQ>VC>VP

Question number: 92

» Rotational Motion » Moment of Inertia

MCQ▾

Question

From a uniform wire, two circular loops are made (i) P of radius r and (ii) Q of radius nr. If the moment of inertia of loop Q about an axis passing through its center and perpendicular to its plane is 125 times that of P about a similar axis, the value of n is (diameter of the wire is very much smaller than r or nr)

Choices

Choice (4) Response
a.

2

b.

5

c.

6

d.

3

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