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प्रश्न
What type of forces – balanced or unbalanced – act on a rubber ball when we press it between our hands ? What effect is produced in the ball ?
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उत्तर
The balanced forces change the shape of the rubber ball when we squeeze it.
When we press a rubber ball between our two hands, the shape of the ball alters from spherical to oblong. This is because two equal and opposite forces (balanced force) are applied by our hands.
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संबंधित प्रश्न
An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.
State whether the following statement is true or false :
Unbalanced forces acting on a body change its shape.
Fill in the following blank with suitable word :
When a stationary car starts suddenly, the passengers are jerked …………………..
Give one example where a force moves a stationary body.
Give one example where a force stops a moving body.
Give one example where a force changes the speed of a moving body.
What happens to the passengers travelling in a bus when the bus takes a sharp turn ? Give reasons for your answer.
A car is moving on a level road. If the driver turns off the engine of the car, the car’s speed decreases gradually and ultimately it comes to a stop. A student says that two forces act on the car which bring it to a stop. What could these forces be ? Which of these two forces contributes more to slow down and stop the car ?
When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of :
Why does it happen?
If a stationary bus suddenly speeds up, passengers are thrown in the backward direction.
