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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.
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संबंधित प्रश्न
Select the correct alternative.
Friction
Give one example of produces motion to indicate that the application of a force?
Name the type of force which act in the following case:
A horse moves a cart
It is difficult to walk on a wet road. Explain.
State if the following statement is true or false. Correct the statement if it is false.
Friction always acts in the direction of motion of an object.
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.
Solve the following numerical problem.
Two persons are pushing a car with a force of 30 N and 70 N in opposite directions. Calculate the resultant force and its direction.
Give a reason for the following.
Vehicles skid on muddy and wet roads. Suggest what type of tires can prevent skidding of vehicles?
What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically
(a) momentum versus velocity when mass is fixed.
(b) momentum versus mass when velocity is constant.
A ball of dough Is rolled into a flat chapatti. Name the force exerted to change the shape of the dough.
