2 A cylindrical helium balloon of volume 1 m and length 1m is tied to a massless string which in turn is tied to the floor of

Question

2 A cylindrical helium balloon of volume 1 m and length 1m is tied to a massless string which in turn is tied to the floor of the cart initially at rest The cart starts moving horizontally with an acceleration of 10 m s If the cart is filled with air of density 1 2 kg m the density of helium is 0 2 kg m and the balloon material has negligible mass then find a The tension in the string before the cart starts to move b In which direction will the balloon move just as the cart starts accelerating 10N loft b10N right 10 loft d 10 EN right

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