40. A boy is pushing a ring of mass 2 kg and radius 0.5 m with a stick as shown in the figure. The stick applies a force of 2 N on the ring and rolls it without slipping with an acceleration of $0.3 \mathrm {~m} / \mathrm { s } ^ { 2 }$. The coefficient of friction between the ground and the ring is large enough that rolling always occurs and the coefficient of friction between the stick and the ring is $( P / 10 )$. The value of $P$ is [Figure] ANSWER: 4
A block is moving on an inclined plane making an angle $45 ^ { \circ }$ with the horizontal and the coefficient of 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 $\mathrm { N } = 10 \mu$, then N is
ANSWER: 5
A block is moving on an inclined plane making an angle $45 ^ { \circ }$ with the horixontal and the coefficient of 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 $\mathrm { N } = 10 \mu$ then N is 5
40. A boy is pushing a ring of mass 2 kg and radius 0.5 m with a stick as shown in the figure. The stick applies a force of 2 N on the ring and rolls it without slipping with an acceleration of $0.3 \mathrm {~m} / \mathrm { s } ^ { 2 }$. The coefficient of friction between the ground and the ring is large enough that rolling always occurs and the coefficient of friction between the stick and the ring is $( P / 10 )$. The value of $P$ is
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\includegraphics[alt={},max width=\textwidth]{cdfce4af-7f3d-4d66-ab09-7da7ecb927ff-19_631_678_1026_745}
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\caption{ANSWER: 4}
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\begin{enumerate}
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\item A block is moving on an inclined plane making an angle $45 ^ { \circ }$ with the horizontal and the coefficient of 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 $\mathrm { N } = 10 \mu$, then N is
\end{enumerate}
ANSWER: 5\\