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प्रश्न
State whether the following statement is true or false :
Unbalanced forces acting on a body change its shape.
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उत्तर
False, unbalanced forces acting on a body changes its speed or its direction of motion, but does not change its shape.
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संबंधित प्रश्न
What is the usual name of the forces which cannot produce motion in a body but only change its shape ?
State whether force is a scalar or a vector quantity?
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.
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.
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.
When we talk of a force acting on a body, it usually means :
If we release a magnet held in our hand, it falls to the ground. The force which makes the magnet fall down is an example of :
