Systems of Particles and Rotational Motion Test

Result

Systems of Particles and Rotational Motion Test - 37

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Question 1
4 / -1

A rod of length L rotate about an axis passing through its centre and normal to its length with an angular velocity ω. If A is the cross-section and D is the density of material of rod. Find its rotational K.E.

A

B

C

D

Solution
Question 2
4 / -1

Initial angular velocity of a circular disc of mass M is w₁ Then two spheres of mass m are attached gently two diametrically oppsite points on the edge of the disc what is the final angular velocity of the disc?

A

B

C

D

Solution
Question 3
4 / -1

A circular disc x of radius R is made from an iron plate of thickness t. and another disc Y of radius 4R is made from an iron plate of thickness t/4 then the rotation between the moment of inertia I_x and I_y is

A

B

C

D

Solution
Question 4
4 / -1

Two spheres each of mass M and radius R/2 are connected with a mass less rod of length 2R as shown in figure. What will be moment of inertia of the system about an axis passing through centre of one of the spheres and perpendicular to the rod?

A

B

C

D

Solution
Question 5
4 / -1

A solid cylinder rolls down a smooth inclined plane 4.8m high without slipping what is its linear speed at the bottom of the plane, if it starts rolling from the top of the plane? (take g = 10 m/s²)

A
4 m/S

B
2 m/S

C
10 m/S

D
8 m/S

Solution
Question 6
4 / -1

A molecule consist of two atoms each of mass \'m\' and separated by a distance of \'d\' If \'K\' is the average rotational K.E. of the molecule at particular temperature then its angular frequency is....

A

B

C

D

Solution
Question 7
4 / -1

A car is moving with a constant speed the wheels of the car make 120 rotations per minute the breaks are applied and the car comes to rest in 8 sec how many rotation are completed by the wheels before the car is brought to rest.

A
4

B
6

C
8

D
10

Solution
Question 8
4 / -1

The angular momentum of a wheel changes from 2L to 5L in 3 seconds what is the magnitudes of torque acting on it?

A
L

B
L/2

C
L/3

D
L/5

Solution
Question 9
4 / -1

A spherical ball rolls on a table without slipping, then the fraction of its total energy associated with rotation is .

A
2/5

B
3/5

C
2/7

D
3/7

Solution
Question 10
4 / -1

A
A

B
B

C
C

D
D