1. kinetic friction
2. limiting friction
3. angle of repose
4. coefficient of friction
coefficient of friction
1. tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction
2. ratio of limiting friction and normal reaction
3. the friction force acting when the body is just about to move
4. the friction force acting when the body is in motion
the friction force acting when the body is in motion
1. higher
2. lower
3. same
4. higher/lower depending on temperature
higher
1. increases
2. decreases
3. remains constant
4. unpredictable
increases
1. remain horizontal
2. slant up towards direction of pull
3. slant down towards direction of pull
4. unpredictable
slant down towards direction of pull
1. has the dimensions of pressure
2. increases with pressure
3. is large when fluid is more compressible
4. is independent of pressure and viscosity
increases with pressure
1. equal to the moment of the couple
2. constant
3. both of above are correct
4. both of above are wrong
equal to the moment of the couple
1. balance each other
2. cannot balance each other
3. produce moment of a couple
4. are equivalent
cannot balance each other
1. meet in a point
2. be all parallel
3. at least two of them must meet
4. all the above are correct
all the above are correct
1. limiting friction
2. sliding friction
3. rolling friction
4. kinematic friction
limiting friction