Friction, and Inclined Plane Friction Motion
LAWS OF MOTION (ADDITIONAL)

372090 When the two surfaces are coated with the lubricant, then they will:

1 slide upon each other
2 stick to each other
3 roll upon each other
4 none of these
LAWS OF MOTION (ADDITIONAL)

372091 If the coefficient of static friction between the tyres and road is 0.5 , what is the shortest distance in which an automobile can be stopped when travelling at \(72 \mathrm{~km} / \mathrm{h}\) ?

1 \(50 \mathrm{~m}\)
2 \(60 \mathrm{~m}\)
3 \(40.8 \mathrm{~m}\)
4 \(80.16 \mathrm{~m}\)
LAWS OF MOTION (ADDITIONAL)

372092 In the given figure the pulley is assumed massless and frictionless. If the friction force on the object of mass \(m\) is \(f\), then its acceleration in terms of the force \(F\) will be eaual to :

1 \((\mathrm{F}-\mathrm{f}) / \mathrm{m}\)
2 \(\left(\frac{\mathrm{F}}{2}-\mathrm{f}\right) / \mathrm{m}\)
3 \(\mathrm{F} / \mathrm{m}\)
4 none of these
LAWS OF MOTION (ADDITIONAL)

372093 A body is moving along a rough horizontal surface with an initial velocity \(6 \mathrm{~m} / \mathrm{s}\). If the body comes to rest after travelling a distance 9 \(\mathrm{m}\), then the coefficient of sliding friction will be:

1 0.4
2 0.2
3 0.6
4 0.8
LAWS OF MOTION (ADDITIONAL)

372090 When the two surfaces are coated with the lubricant, then they will:

1 slide upon each other
2 stick to each other
3 roll upon each other
4 none of these
LAWS OF MOTION (ADDITIONAL)

372091 If the coefficient of static friction between the tyres and road is 0.5 , what is the shortest distance in which an automobile can be stopped when travelling at \(72 \mathrm{~km} / \mathrm{h}\) ?

1 \(50 \mathrm{~m}\)
2 \(60 \mathrm{~m}\)
3 \(40.8 \mathrm{~m}\)
4 \(80.16 \mathrm{~m}\)
LAWS OF MOTION (ADDITIONAL)

372092 In the given figure the pulley is assumed massless and frictionless. If the friction force on the object of mass \(m\) is \(f\), then its acceleration in terms of the force \(F\) will be eaual to :

1 \((\mathrm{F}-\mathrm{f}) / \mathrm{m}\)
2 \(\left(\frac{\mathrm{F}}{2}-\mathrm{f}\right) / \mathrm{m}\)
3 \(\mathrm{F} / \mathrm{m}\)
4 none of these
LAWS OF MOTION (ADDITIONAL)

372093 A body is moving along a rough horizontal surface with an initial velocity \(6 \mathrm{~m} / \mathrm{s}\). If the body comes to rest after travelling a distance 9 \(\mathrm{m}\), then the coefficient of sliding friction will be:

1 0.4
2 0.2
3 0.6
4 0.8
LAWS OF MOTION (ADDITIONAL)

372090 When the two surfaces are coated with the lubricant, then they will:

1 slide upon each other
2 stick to each other
3 roll upon each other
4 none of these
LAWS OF MOTION (ADDITIONAL)

372091 If the coefficient of static friction between the tyres and road is 0.5 , what is the shortest distance in which an automobile can be stopped when travelling at \(72 \mathrm{~km} / \mathrm{h}\) ?

1 \(50 \mathrm{~m}\)
2 \(60 \mathrm{~m}\)
3 \(40.8 \mathrm{~m}\)
4 \(80.16 \mathrm{~m}\)
LAWS OF MOTION (ADDITIONAL)

372092 In the given figure the pulley is assumed massless and frictionless. If the friction force on the object of mass \(m\) is \(f\), then its acceleration in terms of the force \(F\) will be eaual to :

1 \((\mathrm{F}-\mathrm{f}) / \mathrm{m}\)
2 \(\left(\frac{\mathrm{F}}{2}-\mathrm{f}\right) / \mathrm{m}\)
3 \(\mathrm{F} / \mathrm{m}\)
4 none of these
LAWS OF MOTION (ADDITIONAL)

372093 A body is moving along a rough horizontal surface with an initial velocity \(6 \mathrm{~m} / \mathrm{s}\). If the body comes to rest after travelling a distance 9 \(\mathrm{m}\), then the coefficient of sliding friction will be:

1 0.4
2 0.2
3 0.6
4 0.8
LAWS OF MOTION (ADDITIONAL)

372090 When the two surfaces are coated with the lubricant, then they will:

1 slide upon each other
2 stick to each other
3 roll upon each other
4 none of these
LAWS OF MOTION (ADDITIONAL)

372091 If the coefficient of static friction between the tyres and road is 0.5 , what is the shortest distance in which an automobile can be stopped when travelling at \(72 \mathrm{~km} / \mathrm{h}\) ?

1 \(50 \mathrm{~m}\)
2 \(60 \mathrm{~m}\)
3 \(40.8 \mathrm{~m}\)
4 \(80.16 \mathrm{~m}\)
LAWS OF MOTION (ADDITIONAL)

372092 In the given figure the pulley is assumed massless and frictionless. If the friction force on the object of mass \(m\) is \(f\), then its acceleration in terms of the force \(F\) will be eaual to :

1 \((\mathrm{F}-\mathrm{f}) / \mathrm{m}\)
2 \(\left(\frac{\mathrm{F}}{2}-\mathrm{f}\right) / \mathrm{m}\)
3 \(\mathrm{F} / \mathrm{m}\)
4 none of these
LAWS OF MOTION (ADDITIONAL)

372093 A body is moving along a rough horizontal surface with an initial velocity \(6 \mathrm{~m} / \mathrm{s}\). If the body comes to rest after travelling a distance 9 \(\mathrm{m}\), then the coefficient of sliding friction will be:

1 0.4
2 0.2
3 0.6
4 0.8