A student performs two experiments to determine the coefficient of static and kinetic…
Physics · JEE Advanced · NTA Exams — Laws of Motion
A student performs two experiments to determine the coefficient of static and kinetic friction between a block of mass 100 kg and the horizontal floor.
Ist Experiment: He applies a gradual increasing force on the block and is just able to slide the block when force is 450 N
IInd Experiment: He applies constant force of different magnitudes for the duration of 2 s and determine the distance travelled by the block in this duration.
Set Force Distance
1 . 300 N 0.5 m
2 . 600 N 2.0 m
3 . 750 N 3.0 m
Assume all the forces have been applied horizontally.
The speed of the block after 3s (beginning from the starting of application of force) in set 2 for IInd experiment is
Ist Experiment: He applies a gradual increasing force on the block and is just able to slide the block when force is 450 N
IInd Experiment: He applies constant force of different magnitudes for the duration of 2 s and determine the distance travelled by the block in this duration.
Set Force Distance
1 . 300 N 0.5 m
2 . 600 N 2.0 m
3 . 750 N 3.0 m
Assume all the forces have been applied horizontally.
The speed of the block after 3s (beginning from the starting of application of force) in set 2 for IInd experiment is
- 6 m/s
- 2 m/s
- 3 m/s
- Information is insufficient
Answer
(C) 3 m/s
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