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प्रश्न
When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of :
विकल्प
balanced forces
centripetal forces
unbalanced forces
centrifugal forces
उत्तर
balanced force
This is because a balanced force changes the shape of the object.
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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.
Name the unbalanced force which slows down a moving bicycle when we stop pedalling it.
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Explain why, it is dangerous to jump out of a moving bus.
Give one example where a force stops a moving body.
Give one example where a force changes the shape (and size) of a body.
What do you understand by the terms “balanced forces” and “unbalanced forces” ? Explain with examples.
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 ?
What is the unit of force ?
A 1000 kg vehicle moving with a speed of 20 m/s is brought to rest in a distance of 50 metres :
(i) Find the acceleration.
(ii) Calculate the unbalanced force acting on the vehicle.
