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Standard XII

Physics

Finding Friction's Direction

A girl is sta...

Question

A girl is standing on ground near a horizontally moving conveyor belt. She throws her suitcase horizontally. Such that the initial velocity of suitcase relative to stationary girl is along dotted line shown in top view of conveyor belt.

Which of the following arrows represents the direction of friction on the bag at the initial moment.

Arrow A

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Arrow B

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Arrow C

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Arrow D

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Solution

The correct option is A
Arrow A

$V_{\frac{s}{b}}$ → velocity of suitcase with respect to belt, so friction will be opposite to this.

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A girl is standing on ground near a horizontally moving conveyor belt. She throws her suitcase horizontally. Such that the initial velocity of suitcase relative to stationary girl is along dotted line shown in top view of conveyor belt.

Which of the following arrows represents direction of friction at initial moment.

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The correct option is A Arrow A Vsb→ velocity of suitcase with respect to belt, so friction will be opposite to this.

The correct option is A
Arrow A

$V_{\frac{s}{b}}$ → velocity of suitcase with respect to belt, so friction will be opposite to this.