Direction: In the following questions, a statement of assertion (A) i...
When we stop pedalling a bicycle it slows down due to force of friction which acts in the opposite direction of motion.
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Direction: In the following questions, a statement of assertion (A) i...
Assertion : When we stop pedalling a bicycle it slows down.
Reason : Force of friction always acts in the direction of motion.
The correct answer is option C, i.e., Assertion (A) is true but reason (R) is false.
Explanation:
- When we stop pedalling a bicycle, it slows down because the force of friction acts opposite to the direction of motion. However, the reason provided is incorrect.
- The force of friction always opposes the motion of an object. In the case of a bicycle, when we pedal, the force applied by our legs pushes the pedals, which in turn rotates the wheels. The friction between the tires and the road provides the necessary force to move the bicycle forward.
- When we stop pedalling, the force provided by our legs is no longer present, but the force of friction between the tires and the road still acts on the bicycle. This force of friction opposes the motion of the bicycle and gradually slows it down.
- It is important to note that the force of friction can act in both the direction of motion and opposite to the direction of motion, depending on the situation. In this case, the force of friction opposes the motion of the bicycle, causing it to slow down when we stop pedalling.
- The reason provided in the statement, stating that "Force of friction always acts in the direction of motion," is incorrect. Friction can act in either direction, depending on the circumstances.
- Therefore, the correct answer is option C: Assertion (A) is true but reason (R) is false.
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