Username*
E-Mail*
Password*
Confirm Password*
Captcha* Click on image to update the captcha.
Username or email*
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
You must login to ask question.
(d) 1 : √2
(b) Decrease
(a) 2
(b) 2 : 1
(a) Purely rotational motion
(a) 3 ml²
(d) Zero torque
(b) 3h/4
(d) A bangle
(a) 1/3
Two bodies have their moment of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio
(d) 1 : √2
(d) 1 : √2
See less. A person standing on a rotating disc stretches out his hands, the angular speed will
(b) Decrease
(b) Decrease
See lessTwo rings of radii R and nR made from the same wire have the ratio of moments of inertia about an axis passing through their centres equal to 1:8. The value of n is
(a) 2
(a) 2
See lessOne circular ring and one circular disc both having same mass and radius. The ratio of their moment of inertia about the axis passing through their centres and perpendicular to their planes will be
(b) 2 : 1
(b) 2 : 1
See lessA couple is acting on a two particle system. The resultant motion will be
(a) Purely rotational motion
(a) Purely rotational motion
See lessFour point masses each of the value m, are placed at the corner of a square ABCD of side l. The moment of inertia of this system about an axis passing through A parallel to B D is
(a) 3 ml²
(a) 3 ml²
See lessAngular momentum of the particle rotating with a central force is constant due to
(d) Zero torque
(d) Zero torque
See lessDistance of the centre of mass of a solid uniform cone from it’s vertex is Zo. If the radius of it’s base is R and it’s height is h, the Zo is equal to
(b) 3h/4
(b) 3h/4
See lessFor which of the following does the center of mass lie out side the body?
(d) A bangle
(d) A bangle
See lessA circular disc of radius R is removed from a bigger circular disc of radius 2R, such that the circumference of the disc coincides. The centre of mass of the new disc is αR from the centre of bigger disc. The value of α is
(a) 1/3
(a) 1/3
See less