Why do (either positively or negatively) charged balloons (an insulator) hang on a wall (which is also an insulator) if the wall is neutral?

When a charged balloon is brought near a wall which is neutral, it still sticks to the wall because the charged balloon induces the charge in the neutral body.

If the balloon is positively charged, the electrons in the neutral body will be attracted to the balloon causing an imbalance of charges in the neutral body.

Similarly if the balloon is negatively charged, it will attract the protons of the neutral body and will stick to it.

The phenomenon is called induced charge into the neutral body.

the body's situation won't change the forces are equal opposit and on the same body

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards