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The string of a pendulum is horizontal. Mass of the bob is m. Now the string is released, what is the tension in the string at lowest position Ans) If string length is L, Conserving energy, velocity at lowest point is (2gL)1/2 Centripetal force mv2/L= 2mg. T- mg= mv2/LT= 3mg
Why rotation of rigid bodies through finite angles not a vector? Ans) Because it does not obey one of the laws of vector algebra(law of commutativity).
INERTIAL FRAME OF REFERENCE: "A frame of reference which is not being accelerated and it might be at rest or moving with uniform velocity is known as inertial frame of referen
a) Explain the magnetic effects of current? b) Do the diagram to show the direction of motion of the conductor:
A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could expla
MOTION EXAM WITH ANSWERS
potential energy
Q. What is an optical fibre and dispersion? Write the expression for angle of deviation.
a parallel pate capacitor has two dieletric slabs between the plates with interface normal to E and D.the thickness of each slab is 1cm,area is 100cm2.neglect fringing effects.dete
why a metal disc is thrown up when it is placed on the top of an electromagnet is the current is switched on?
5 example of Classification and 5 types of Vectors and 3 Dimensional Forces
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