04. Friction, and Inclined Plane Friction Motion
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Laws of Motion

146140 A block rests on a fixed wedge inclined at an angle \(\theta\). The coefficient of friction between the block and plane is \(\mu\). The maximum value of \(\theta\) for the block to remain motionless on the wedge is

1 \(\mu=\tan \theta\)
2 \(\mu=\sin \theta\)
3 \(\mu=\cos \theta\)
4 \(\mu=\cot \theta\)
Laws of Motion

146141 A body of mass \(2 \mathrm{~kg}\) is placed on a horizontal surface having kinetic friction 0.4 and static friction 0.5. If the force applied on the body is \(2.5 \mathrm{~N}\), then the frictional force acting on the body will be \(\left[\mathrm{g}=10 \mathrm{~ms}^{-2}\right]\)

1 \(8 \mathrm{~N}\)
2 \(10 \mathrm{~N}\)
3 \(20 \mathrm{~N}\)
4 \(2.5 \mathrm{~N}\)
Laws of Motion

146142 The upper half of an inclined plane with inclination \(\phi\) is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

1 \(2 \cos \phi\)
2 \(2 \sin \phi\)
3 \(\tan \phi\)
4 \(2 \tan \phi\)
Laws of Motion

146143 If a block of mass ' \(m\) ' place on a plane inclined at an angle \(\theta\), is on the verge of sliding, then the coefficient of friction between the block and the plane is given by

1 \(\sin \theta\)
2 \(\cos \theta\)
3 \(\tan \theta\)
4 \((\sin 2 \theta) / 2\)
Laws of Motion

146140 A block rests on a fixed wedge inclined at an angle \(\theta\). The coefficient of friction between the block and plane is \(\mu\). The maximum value of \(\theta\) for the block to remain motionless on the wedge is

1 \(\mu=\tan \theta\)
2 \(\mu=\sin \theta\)
3 \(\mu=\cos \theta\)
4 \(\mu=\cot \theta\)
Laws of Motion

146141 A body of mass \(2 \mathrm{~kg}\) is placed on a horizontal surface having kinetic friction 0.4 and static friction 0.5. If the force applied on the body is \(2.5 \mathrm{~N}\), then the frictional force acting on the body will be \(\left[\mathrm{g}=10 \mathrm{~ms}^{-2}\right]\)

1 \(8 \mathrm{~N}\)
2 \(10 \mathrm{~N}\)
3 \(20 \mathrm{~N}\)
4 \(2.5 \mathrm{~N}\)
Laws of Motion

146142 The upper half of an inclined plane with inclination \(\phi\) is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

1 \(2 \cos \phi\)
2 \(2 \sin \phi\)
3 \(\tan \phi\)
4 \(2 \tan \phi\)
Laws of Motion

146143 If a block of mass ' \(m\) ' place on a plane inclined at an angle \(\theta\), is on the verge of sliding, then the coefficient of friction between the block and the plane is given by

1 \(\sin \theta\)
2 \(\cos \theta\)
3 \(\tan \theta\)
4 \((\sin 2 \theta) / 2\)
Laws of Motion

146140 A block rests on a fixed wedge inclined at an angle \(\theta\). The coefficient of friction between the block and plane is \(\mu\). The maximum value of \(\theta\) for the block to remain motionless on the wedge is

1 \(\mu=\tan \theta\)
2 \(\mu=\sin \theta\)
3 \(\mu=\cos \theta\)
4 \(\mu=\cot \theta\)
Laws of Motion

146141 A body of mass \(2 \mathrm{~kg}\) is placed on a horizontal surface having kinetic friction 0.4 and static friction 0.5. If the force applied on the body is \(2.5 \mathrm{~N}\), then the frictional force acting on the body will be \(\left[\mathrm{g}=10 \mathrm{~ms}^{-2}\right]\)

1 \(8 \mathrm{~N}\)
2 \(10 \mathrm{~N}\)
3 \(20 \mathrm{~N}\)
4 \(2.5 \mathrm{~N}\)
Laws of Motion

146142 The upper half of an inclined plane with inclination \(\phi\) is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

1 \(2 \cos \phi\)
2 \(2 \sin \phi\)
3 \(\tan \phi\)
4 \(2 \tan \phi\)
Laws of Motion

146143 If a block of mass ' \(m\) ' place on a plane inclined at an angle \(\theta\), is on the verge of sliding, then the coefficient of friction between the block and the plane is given by

1 \(\sin \theta\)
2 \(\cos \theta\)
3 \(\tan \theta\)
4 \((\sin 2 \theta) / 2\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Laws of Motion

146140 A block rests on a fixed wedge inclined at an angle \(\theta\). The coefficient of friction between the block and plane is \(\mu\). The maximum value of \(\theta\) for the block to remain motionless on the wedge is

1 \(\mu=\tan \theta\)
2 \(\mu=\sin \theta\)
3 \(\mu=\cos \theta\)
4 \(\mu=\cot \theta\)
Laws of Motion

146141 A body of mass \(2 \mathrm{~kg}\) is placed on a horizontal surface having kinetic friction 0.4 and static friction 0.5. If the force applied on the body is \(2.5 \mathrm{~N}\), then the frictional force acting on the body will be \(\left[\mathrm{g}=10 \mathrm{~ms}^{-2}\right]\)

1 \(8 \mathrm{~N}\)
2 \(10 \mathrm{~N}\)
3 \(20 \mathrm{~N}\)
4 \(2.5 \mathrm{~N}\)
Laws of Motion

146142 The upper half of an inclined plane with inclination \(\phi\) is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

1 \(2 \cos \phi\)
2 \(2 \sin \phi\)
3 \(\tan \phi\)
4 \(2 \tan \phi\)
Laws of Motion

146143 If a block of mass ' \(m\) ' place on a plane inclined at an angle \(\theta\), is on the verge of sliding, then the coefficient of friction between the block and the plane is given by

1 \(\sin \theta\)
2 \(\cos \theta\)
3 \(\tan \theta\)
4 \((\sin 2 \theta) / 2\)