Question

Q7) An inflated balloon was pressed against a wall after it had been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

Q8) Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion?

Q9) A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.

SHORT ANSWERS AND CORRECT ONLY IN TYPE OF PHYSICS

Answer 1

Explanation:

1) The answer to first question is electostatic force

2) The answer of second one is quite tricky but very easy it us muscular force acting upwards and gravitational force acting downwards. The forces acting on the bucket do not bring a change in its state of motion because the forces balance each others and finall force which is the net force is zero.

3) The two forces acting on the rocket immediately after leaving the launching pad are the downward gravitational force (Mg) and the upward reaction force due to the thrust by the fuel (FT). Note: ... The pointy-head makes the rocket aerodynamic and reduces the frictional force due to air.

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