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Motion in a Pla...

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  • Question 1
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  • Question 2
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    A small sphere is hung by a string fixed to a wall. The sphere is pushed away from the wall by a stick. The forces acting on the sphere are shown in Fig. Which of the following statements is wrong?

  • Question 3
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    A sphere of mass m, moving with a speed v strikes a wall elastically at an angle of incidence θ. If the speed of the sphere before and after collision is the same and the angle of rebound is equal to the angle of incidence and velocity normally towards the wall is taken as negative, then the change in momentum parallel to the wall is :

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    The instantaneous co-ordinates of a particle are x = 6 t metre and y = 4 t2 metre. What will be the velocity of the particle at t = 1 s?

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  • Question 9
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  • Question 10
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