Advertisements
Advertisements
प्रश्न
Answer the following in short.
Why does a charged balloon stick to a wall?
उत्तर
It is due to the electrostatic force between the balloon and the wall. Opposite charges attract each other.
APPEARS IN
संबंधित प्रश्न
Write true or false.
A force can change the direction of motion of a moving body.
Fill in the blank.
Lubricants are used to ..................... friction.
Name the type of force which act in the following case:
A bicycle comes to rest slowly when the cyclist stops pedaling
Define the term “weight of a body”
Which offers more friction on a body: a glass surface or a wooden surface?
Answer the following in a word or two or in a sentence.
Give an example in which a force can change the direction of an object.
Answer the following in short.
What will happen to an object if two equal forces act on it in opposite directions?
Solve the following numerical problem.
Two horses pull a cart in the same direction with a force of 500 N each. Find the resultant force acting on the cart.
Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they move at the same speed? Give reasons for your answer.
Two women are of the same weight. One wears sandals with pointed heels while the other wears sandals with flat soles. Which one would feel more comfortable while walking on a sandy beach? Give reasons for your answer.
