Advertisements
Advertisements
Question
An inflated balloon was pressed against a wall after it has 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?
Advertisements
Solution
On rubbing an inflated balloon with a piece of synthetic cloth, it becomes charged. A charged body attracts an uncharged body. When this charged balloon is pressed against a wall, it sticks to the wall. The force acting between the charged balloon and the wall is the electrostatic force.
APPEARS IN
RELATED QUESTIONS
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.
One or more forces are acting in the following example. Name them.
An object falling from a tall building: ______
Why machines are oiled from time to time?
In what way are we different muscular force and mechanical force?
Write an answer to the following question in your own words.
What are the things that can be done by applying force?
Write an answer to the following question in your own words.
What is meant by weight?
There are three solids made up of aluminium, steel and wood, of the same shape and same volume. Which of them would have the highest inertia?
Two rods of the same weight and equal length have different thickness. They are held vertically on the surface of sand as shown in figure. Which one of them will sink more? Why?
Which component of the reaction force between two surfaces in contact is known as the frictional force?
A coconut falls from a tree to the ground. Which force is responsible for this?
