19. In the given figure the wedge is fixed, pulley is fric-
tionless and string is light. Surface AB is frictionless
whereas AC is rough. If the block of mass 3m slides down
with constant velocity, then the coefficient of friction be-
tween surface AC and the block is -
45° 45°
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Answer:
you have done a mistake you didn't put the figure
Explanation:
you didn't put the figure you can put figure by camera notification
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