Sir I am imagining a situation where a spinning solid cylinder ( here it is spinning for magnetic field and electric field as it is charged)moves down in inclined plane. But I can’t figure out all the forces and the free body diagram.so I request you if explain this situation if is it possible.
@@SankhaBanerjee-f1q on the sphere there is a magnetic forces vertically upwards and gravity along the incline and electric force balances it and normal balances component of gravity and magnetic force
Mainly I am not figuring out the case when it spinning on a rough incline plane , so what is happening, is slipping or rolling at time of going in down wards. And how it effects on acceleration towards down.
@@SankhaBanerjee-f1q well ! When it is a rough surface the sphere rolls without slipping and the work done by the normal and the magnetic force is zero so these will doesn't effect the motion of the sphere
I am telling about solid cylinder not the sphere..and suppose you imagine the y axis perpendicular to inclined plane and x axis parallel to the plane the the omega along y axis produces spinning effect and it needs another omega along z axis (here z axis is perpendicular with both x and y axis )if it rolls down ward with spinning. So there two diff omega .is rolling with spinning possible?? And another thing if slipping happens with spinning the acceleration should be less than normal slipping.so how can I measure this new acceleration ?? And here I am telling about magnetic force and electrostatic force as they generate spinning effect. I am not sure about this spinning effect due to electromagnetic force? Even without this electromagnetic forces if think normally some thing like pen and you spin it on inclined plane. The what is it acceleration towards down. It will be very helpful if you .answer me
Hello brother could you please take some more mechanics questions from fiitjee previous. Year aits Would really help since aits begins from 16th of november If you wish i could mail you the papers
@19.30 you used impulse momentum theorem but when we equate the two terms it seems like we have used conservation of angular momentum about the fixed wall. Is it correct to say? Thanks for your efforts❤
Yeah I should have been a bit more clear there, simply speaking I just integrated the tangential force equation (f = -m at) wrt time. Rhs becomes -m∆v.
Nice video. I just felt like the answer to the first question can be obtained using angular momentum too. First finding the change in angular momentum and dividing it by the perpendicular distance of ball A from the axis (i.e ball B) will give us the impulse which will give us the initial velocity
The calculations in the first questions seem to be wrong. The limiting condition for the block B to lift is 2T = Mg. Based on the string and pulley constraints, T.ap - T.aa + 2T.ab = 0, where ab = a of B, ap = a of P and aa = a of a. Since ab = 0 for the limiting case of B just lifting up, acceleration of mass A = acceleration of pulley P. Using the FBD for A and P, m'g - T = m'a and mg + T = ma. Eliminating a from the two equations gives m(m'g - T) = m'(mg + T) or (m + m') T = 0. Since m + m' can not be 0, T must be 0. If T = 0, there is no upward force on B to lift it up. Therefore, B can not be lifted. This is an example of Trivial Tension arising from the "output" of the pulley P connected to its "input". The system as a whole can never deliver any power. Hence no mass in place of B can be lifted no matter what is hanging in place of A.
I have solved these question previously.. but my solutions were 2-3 lines longer than yours.. i was dead set on using cyclic quadrilateral properties in the first one😅.. sir your methods of solving are beautiful
I absolutely love the way u explain stuff my humble requests 1) please make playlists chapter wise (for advanced) Example: Sbt questions Pathfinder questions and test series/AITS questions of Kinematics make one playlist as Kinematics Advanced Questions 2) Please Bring something for Jee Mains Physics too, like solving Important questions of Kinematics for jee mains in that add AITS questions,tricky PYQs etc
Sir thank for your videos really using and sir I wasn't practiced well for jee mains if I start know can I able to score 200+ plz guide me sir for January attempt
i did not get the logic why we are taking small displacements in the second question... maybe analytically if the answer satisfies small displacements then it is valid for large displacements as well.. but to judge that the small displacements case will suffice how to do intuitively see that in the beginning of the question?
at 3:40 a+b will not be equal 2g because (mA)- mass of block A and (m)- mass of pulley are not the same.. even though we will still get the answer intuitively.. and man your approach for second problem was pure beauty
