1.

Inside a railway car a plumb bob is suspended from the roof and a helium filled balloon is tied by a string to the floor of the car. When the railway car accelerates to the right, then

Answer»

both the plumb bob and BALLOON move to the LEFT
both the plumb bob and balloon move to the RIGHT
plumb bob moves to the left and the balloon moves to the right
plumb bob moves to the right and the balloon moves to the left

Answer :C


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