76.

Two rigid bodies A and B rotate with rotational kinetic energies E_A and E_B respectively. The moments of inertia of A and B about the axis of rotation are I_A and I_B respectively. If I_A = I_B /4 and E_A = 100 E_B the ratio of angular momentum (L_A) of A to the angular momentum (L_B) of B is

(a) 25

(b) 5/4

(d) 1/4

Ans. c

(18)

5/5 - (1 vote)

PrevPrevious61. 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 Q about an axis passing through its centre and perpendicular to its plane is 8 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)

Next78. An equilateral triangle ABC formed from a uniform wire has two small identical beads initially located at A. The triangle is set rotating about the vertical axis AO. Then the beads are released from rest simultaneously and allowed to slide down, one along AB and the other along AC as shown. Neglecting frictional effects, the quantities that are conserved as the beads slide down, areNext

Shopping cart

76.

You May Also Like

Career counsellors in Chandigarh Online Offline

8. P-V plots for two gases during adiabatic process are shown in the figure. Plots 1 and 2 should correspond respectively to

9. An ideal gas expands isothermally from a

Sign up to receive latest updates

Get in touch

Need some help?

Popular subjects

Need some help?

Shopping cart

76.

You May Also Like

Career counsellors in Chandigarh Online Offline

8. P-V plots for two gases during adiabatic process are shown in the figure. Plots 1 and 2 should correspond respectively to

9. An ideal gas expands isothermally from a

Sign up to receive latest updates

Get in touch

Need some help?

Popular subjects

Need some help?

Login with your site account

Register a new account

Search