Walking on Ice – Rankers Physics

Friction: Practice Problem & Solution

Assertion (A): Walking on horizontal slippery ice can be much more tiring than walking on ordinary pavement. Reason (R): Walking on ice requires small steps to prevent slipping.  
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution Explained:

To solve this problem, we apply the core principles of Friction. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is true due to low friction on ice. Reason (R) is also true as small steps are needed to minimize horizontal forces and prevent slipping. (R) explains why extra effort and carefulness are required, making the activity tiring.

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Practice Questions

Explore conceptually related problems to test your knowledge.

1. Assertion (A): A man standing at rest on ground. Force exerted by man on ground is equal to weight of man. Reason (R): Earth attracts man by force \(mg\) hence by Newton's third law, man also attracts earth by same force.  
2. A conveyor belt is moving at a constant speed of \( 2 \text{ m/s} \). A box is gently dropped on it. The coefficient of friction between them is \( \mu = 0.5 \). The distance that the box will move relative to belt before coming to rest on it, taking \( g = 10 \text{ ms}^{-2} \). (2011 Mains)
3. If a cloth covers a table and some dishes are kept on it, then the cloth can be pulled out without dislodging the dishes from the table by pulling the cloth suddenly. The dishes will remain on table due to
4. Assertion (A): If a particle is found to be in equilibrium in two different frames of reference implies that both frames are inertial. Reason (R): Newton's second law can be used for motion of a particle in any reference frame.
5. Assertion (A): When a man climbs the rope friction force acts in downward direction. Reason (R): Friction force opposes relative motion or tendency of relative motion between two contact surfaces.