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Thursday, June 25, 2020

time and work (part 1)

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Tuesday, June 23, 2020

unitary method part 2

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Monday, June 22, 2020

unitary method

part 1 (concept)
part 2 (problems)
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Content

1. Proportion
2. Unitary method

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Proportion

 part 1
 part 2,3 4
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Saturday, June 20, 2020

unitary method concept part 1

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Thursday, June 18, 2020

World hardest geometry problem


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Proportion part 2,3 and 4


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Introduction to proportion


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hard problem 27(Find the required angle)

  • Relation between Cartesian (or rectangular) components of stress
    Consider the motion of a small rectangular parallelepiped in viscous fluid with centre at P(x,y,z) and it’s edges of length d x, d y, ...
  • A uniform solid cylinder is placed with its axis horizontal on a plane, whose inclination to the horizon is α. Show that the least coefficient of the friction between it and the plane, so that it may roll and not slide, is 1/3 tanα. If the cylinder be hollow and of small thickness, the least value is 1/2 tanα.
    Solution: In this figure 1 ,  a uniform solid cylinder is placed horizontally on the plane BOCD Which makes an angle α with the hor...
  • A shopkeeper purchased an electric fan for Rs. 1560 and sold it at 5% profit. Find his actual profit and selling price of the fan.

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      • time and work (part 1)
      • unitary method part 2
      • unitary method
      • Content
      • Proportion
      • unitary method concept part 1
      • World hardest geometry problem
      • Proportion part 2,3 and 4
      • Introduction to proportion
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