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A fly Wheel is a uniform disc of mass 72 kg and 50 cm When it is rotating at the rate of 70r.p.m its kinetic energy is
30
Oct
A fly Wheel is a uniform disc of mass 72 kg and 50 cm When it is rotating at the rate of 70r.p.m its kinetic energy is A fly Wheel is a uniform disc of mass 72 kg and 50 cm When it is rotating at the rate of 70r.p.m its kinetic energy is October [...]
A solid sphere of mass M and radius R rotates about an axis passing through its centre making 600 rpm. Its kinetic energy of rotation is
30
Oct
A solid sphere of mass M and radius R rotates about an axis passing through its centre making 600 rpm. Its kinetic energy of rotation is A solid sphere of mass M and radius R rotates about an axis passing through its centre making 600 rpm. Its kinetic energy of rotation is October 30, 2020 [...]
A coin of mass m and radius r, having moment of inertia l about the axis passing through its centre and perpendicular to its plane, is beaten uniformly to from a disc of radius 2r. What will be the moment of inertia about the same axis ?
30
Oct
A coin of mass m and radius r, having moment of inertia l about the axis passing through its centre and perpendicular to its plane, is beaten uniformly to from a disc of radius 2r. What will be the moment of inertia about the same axis ? A coin of mass m and radius r [...]
One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moment of inertia about their diameters are respectively IA and IB such that where dA and dB are their densities.
30
Oct
One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moment of inertia about their diameters are respectively IA and IB such that where dA and dB are their densities. 1) is: A force of -F k acts on O the origin of the coordinate system. The [...]
The moment of inertia of a body about a given axis is 1.2kgm^2. Initially, the body is at rest. In order to produce a rotational KE of 6000j, for how much duration, an acceleration of 25rads^−2 must be applied about that axis for a duration of ?
30
Oct
The moment of inertia of a body about a given axis is 1.2kgm^2. Initially, the body is at rest. In order to produce a rotational KE of 6000j, for how much duration, an acceleration of 25rads^−2 must be applied about that axis for a duration of ? an acceleration of 25rads^−2 must be applied about [...]
Let A and B are two identical objects of same mass initially are charged electrostatically by rubbing against each other. Let A has got a positive charge and B has got a negative charge , then match column I and column II.
30
Oct
Let A and B are two identical objects of same mass initially are charged electrostatically by rubbing against each other. Let A has got a positive charge and B has got a negative charge , then match column I and column II. Let A and B are two identical objects of same mass initially are [...]
The following figure shows a block of mass m suspended from a fixed point by means of a vertical spring. The block is oscillatting simple harmonically and carries a charge q. There also exists a uniform electric field in the region. Consider four different cases. The electric field is zero in case 1, mg/q downward in case 2, mg/q upward in case 3, and 2mg/q downward in case 4. The speed at mean position is same in all cases. Select the correct alternative (s).
30
Oct
The following figure shows a block of mass m suspended from a fixed point by means of a vertical spring. The block is oscillatting simple harmonically and carries a charge q. There also exists a uniform electric field in the region. Consider four different cases. The electric field is zero in case 1, mg/q downward [...]
Two objects A nad B are charged . Let qA = charge on A and QB = charge on B , then match column I and column II.
30
Oct
Two objects A nad B are charged . Let qA = charge on A and QB = charge on B , then match column I and column II. then match column I and column II. Two objects A nad B are charged . Let qA = charge on A and QB = charge on B [...]
Three charged particles are in equilibrium under their electrostatic forces only.
30
Oct
Three charged particles are in equilibrium under their electrostatic forces only. Three charged particles are in equilibrium under their electrostatic forces only. October 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A charged cork of mass m suspended by a light string is placed in uniform electric field of strength E = ( i + j ) x 10^5 N/C as shown in the figure. if in equilibrrium position tension in teh string is 2 mg /(1 +root 3 ) then angle alpha with the vertical can be
30
Oct
A charged cork of mass m suspended by a light string is placed in uniform electric field of strength E = ( i + j ) x 10^5 N/C as shown in the figure. if in equilibrrium position tension in teh string is 2 mg /(1 +root 3 ) then angle alpha with the vertical [...]