A block is moving on a inclined plane making an angle \( 45^{\circ} \) with the horizontal and t....

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A block is moving on a inclined plane making an angle \( 45^{\circ} \) with the horizontal and the coefficient of
P
friction is \( \mu \). The force required to just push it up the inclined plane is 3 times the force required to just prevent it from sliding down. If we define \( N=10 \mu \), then \( N \) is:


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