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Laws of Motion

270125 The maximum speed of a car on a curved path of radius ' \(r\) ' and the coefficient of friction \(\mu_{\mathbf{k}}\) is

1 \(v=\sqrt{\frac{\mu_{k}}{g r}}\)
2 \(v=\sqrt{\mu_{k} g r}\)
3 \(v=\sqrt{\frac{g r}{\mu_{k}}}\)
4 \(v=\sqrt{\frac{1}{\mu_{k} g r}}\)
Laws of Motion

270126 The angle which the rough inclined plane makes with the horizontal when the body placed on it just starts sliding down is called

1 angle of Friction
2 angle of repose
3 critical angle
4 brewster's angle
Laws of Motion

270127 A body of mass \(M\) is placed on a rough inclined plane of inclination ? and coefficient of friction \(\mu_{\mathbf{k}}\). A force of \(\left(\mathbf{m g} \sin\right.\) ? \(+\mu_{\mathbf{k}} \mathbf{m g}\) cos?) is applied in the upward direction, the acceleration of the body is

1 \(\mathrm{g} \sin\) ?
2 \(\mathrm{g}\left(\sin ?+\mu_{\mathrm{k}} \cos\right.\) ?)
3 g \(\left(\sin ?-\mu_{\mathrm{k}} \cos\right.\) ?)
4 Zero
Laws of Motion

270128 It is easier to pull a lawn roller than to push it because pulling

1 involves sliding friction
2 involves dry friction
3 increases the effective weight
4 decreases normal reaction
Laws of Motion

270129 A block of mass \(m\) and surface area \(A\) just begins to slide down an inclined plane when the angle of inclination is \(p / 5\). Keeping the mass of the block same, if the surface area is doubled, the inclination of the plane at which the block starts sliding will be

1 \(p / 5\)
2 \(p / 10\)
3 \(2 \mathrm{p} / 5\)
4 \(\mathrm{p} / 5 \sqrt{2}\)
NEET DIGITAL LIBRARY
Laws of Motion

270125 The maximum speed of a car on a curved path of radius ' \(r\) ' and the coefficient of friction \(\mu_{\mathbf{k}}\) is

1 \(v=\sqrt{\frac{\mu_{k}}{g r}}\)
2 \(v=\sqrt{\mu_{k} g r}\)
3 \(v=\sqrt{\frac{g r}{\mu_{k}}}\)
4 \(v=\sqrt{\frac{1}{\mu_{k} g r}}\)
Laws of Motion

270126 The angle which the rough inclined plane makes with the horizontal when the body placed on it just starts sliding down is called

1 angle of Friction
2 angle of repose
3 critical angle
4 brewster's angle
Laws of Motion

270127 A body of mass \(M\) is placed on a rough inclined plane of inclination ? and coefficient of friction \(\mu_{\mathbf{k}}\). A force of \(\left(\mathbf{m g} \sin\right.\) ? \(+\mu_{\mathbf{k}} \mathbf{m g}\) cos?) is applied in the upward direction, the acceleration of the body is

1 \(\mathrm{g} \sin\) ?
2 \(\mathrm{g}\left(\sin ?+\mu_{\mathrm{k}} \cos\right.\) ?)
3 g \(\left(\sin ?-\mu_{\mathrm{k}} \cos\right.\) ?)
4 Zero
Laws of Motion

270128 It is easier to pull a lawn roller than to push it because pulling

1 involves sliding friction
2 involves dry friction
3 increases the effective weight
4 decreases normal reaction
Laws of Motion

270129 A block of mass \(m\) and surface area \(A\) just begins to slide down an inclined plane when the angle of inclination is \(p / 5\). Keeping the mass of the block same, if the surface area is doubled, the inclination of the plane at which the block starts sliding will be

1 \(p / 5\)
2 \(p / 10\)
3 \(2 \mathrm{p} / 5\)
4 \(\mathrm{p} / 5 \sqrt{2}\)
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Laws of Motion

270125 The maximum speed of a car on a curved path of radius ' \(r\) ' and the coefficient of friction \(\mu_{\mathbf{k}}\) is

1 \(v=\sqrt{\frac{\mu_{k}}{g r}}\)
2 \(v=\sqrt{\mu_{k} g r}\)
3 \(v=\sqrt{\frac{g r}{\mu_{k}}}\)
4 \(v=\sqrt{\frac{1}{\mu_{k} g r}}\)
Laws of Motion

270126 The angle which the rough inclined plane makes with the horizontal when the body placed on it just starts sliding down is called

1 angle of Friction
2 angle of repose
3 critical angle
4 brewster's angle
Laws of Motion

270127 A body of mass \(M\) is placed on a rough inclined plane of inclination ? and coefficient of friction \(\mu_{\mathbf{k}}\). A force of \(\left(\mathbf{m g} \sin\right.\) ? \(+\mu_{\mathbf{k}} \mathbf{m g}\) cos?) is applied in the upward direction, the acceleration of the body is

1 \(\mathrm{g} \sin\) ?
2 \(\mathrm{g}\left(\sin ?+\mu_{\mathrm{k}} \cos\right.\) ?)
3 g \(\left(\sin ?-\mu_{\mathrm{k}} \cos\right.\) ?)
4 Zero
Laws of Motion

270128 It is easier to pull a lawn roller than to push it because pulling

1 involves sliding friction
2 involves dry friction
3 increases the effective weight
4 decreases normal reaction
Laws of Motion

270129 A block of mass \(m\) and surface area \(A\) just begins to slide down an inclined plane when the angle of inclination is \(p / 5\). Keeping the mass of the block same, if the surface area is doubled, the inclination of the plane at which the block starts sliding will be

1 \(p / 5\)
2 \(p / 10\)
3 \(2 \mathrm{p} / 5\)
4 \(\mathrm{p} / 5 \sqrt{2}\)
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Laws of Motion

270125 The maximum speed of a car on a curved path of radius ' \(r\) ' and the coefficient of friction \(\mu_{\mathbf{k}}\) is

1 \(v=\sqrt{\frac{\mu_{k}}{g r}}\)
2 \(v=\sqrt{\mu_{k} g r}\)
3 \(v=\sqrt{\frac{g r}{\mu_{k}}}\)
4 \(v=\sqrt{\frac{1}{\mu_{k} g r}}\)
Laws of Motion

270126 The angle which the rough inclined plane makes with the horizontal when the body placed on it just starts sliding down is called

1 angle of Friction
2 angle of repose
3 critical angle
4 brewster's angle
Laws of Motion

270127 A body of mass \(M\) is placed on a rough inclined plane of inclination ? and coefficient of friction \(\mu_{\mathbf{k}}\). A force of \(\left(\mathbf{m g} \sin\right.\) ? \(+\mu_{\mathbf{k}} \mathbf{m g}\) cos?) is applied in the upward direction, the acceleration of the body is

1 \(\mathrm{g} \sin\) ?
2 \(\mathrm{g}\left(\sin ?+\mu_{\mathrm{k}} \cos\right.\) ?)
3 g \(\left(\sin ?-\mu_{\mathrm{k}} \cos\right.\) ?)
4 Zero
Laws of Motion

270128 It is easier to pull a lawn roller than to push it because pulling

1 involves sliding friction
2 involves dry friction
3 increases the effective weight
4 decreases normal reaction
Laws of Motion

270129 A block of mass \(m\) and surface area \(A\) just begins to slide down an inclined plane when the angle of inclination is \(p / 5\). Keeping the mass of the block same, if the surface area is doubled, the inclination of the plane at which the block starts sliding will be

1 \(p / 5\)
2 \(p / 10\)
3 \(2 \mathrm{p} / 5\)
4 \(\mathrm{p} / 5 \sqrt{2}\)
NEET DIGITAL LIBRARY
Laws of Motion

270125 The maximum speed of a car on a curved path of radius ' \(r\) ' and the coefficient of friction \(\mu_{\mathbf{k}}\) is

1 \(v=\sqrt{\frac{\mu_{k}}{g r}}\)
2 \(v=\sqrt{\mu_{k} g r}\)
3 \(v=\sqrt{\frac{g r}{\mu_{k}}}\)
4 \(v=\sqrt{\frac{1}{\mu_{k} g r}}\)
Laws of Motion

270126 The angle which the rough inclined plane makes with the horizontal when the body placed on it just starts sliding down is called

1 angle of Friction
2 angle of repose
3 critical angle
4 brewster's angle
Laws of Motion

270127 A body of mass \(M\) is placed on a rough inclined plane of inclination ? and coefficient of friction \(\mu_{\mathbf{k}}\). A force of \(\left(\mathbf{m g} \sin\right.\) ? \(+\mu_{\mathbf{k}} \mathbf{m g}\) cos?) is applied in the upward direction, the acceleration of the body is

1 \(\mathrm{g} \sin\) ?
2 \(\mathrm{g}\left(\sin ?+\mu_{\mathrm{k}} \cos\right.\) ?)
3 g \(\left(\sin ?-\mu_{\mathrm{k}} \cos\right.\) ?)
4 Zero
Laws of Motion

270128 It is easier to pull a lawn roller than to push it because pulling

1 involves sliding friction
2 involves dry friction
3 increases the effective weight
4 decreases normal reaction
Laws of Motion

270129 A block of mass \(m\) and surface area \(A\) just begins to slide down an inclined plane when the angle of inclination is \(p / 5\). Keeping the mass of the block same, if the surface area is doubled, the inclination of the plane at which the block starts sliding will be

1 \(p / 5\)
2 \(p / 10\)
3 \(2 \mathrm{p} / 5\)
4 \(\mathrm{p} / 5 \sqrt{2}\)