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Self Studies
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Motion in a Pla...

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  • Question 1
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  • Question 2
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    The speed of a boat is 5 km/h in still water. It crosses a river of width 1.0 km along the shortest possible path in 15 minutes. The velocity of the river water is (in km/h)

  • Question 3
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    Two particles A and B are connected by a rigid rod AB. The rod slides along perpendicular rails as shown here. The velocity of A to the left is 10 m/s. What is the velocity of B when angle α = 30º ?

  • Question 4
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  • Question 5
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    If at a height of 40 cm, the direction of motion of a projectile makes an angle π/4 with the horizontal, then its initial velocity and angle of projection are, respectively

  • Question 6
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    Three forces of magnitude 5N, 5N and √50 N act on a corner of a cube along the three sides as shown in Fig. Resultant of these forces is

  • Question 7
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  • Question 8
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    A ball of mass 0.3 kg is whirled in a circle at the end of a string of a string 1.0 m long whose breaking strength is 10 N. The maximum speed of the ball is approximately (neglecting gravity)

  • Question 9
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    An object of mass 10 kg is whirled round a horizontal circle of radius 4 m by a revolving string inclined 300 to the vertical. If the uniform speed of the object is 5 ms-1, the tension in the string (approximately) is

  • Question 10
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