. Masses M1, M2 and M3 are connected by strings of negligible mass which pass over massless and frictionless pulleys P1 and P2 as shown in fig


Masses M1, M2 and M3 are connected by strings of negligible mass which pass over massless and frictionless pulleys P1 and P2 as shown in fig. The masses move such that the portion of the string between P1 and P2 is parallel to the inclined plane and the portion of the string between P2 and M3 is horizontal. The masses M2 and M3 are 4.0 kg each and the coefficient of kinetic friction between the masses and the surfaces is 0.25. The inclined plane makes an angle 0f 37° with the horizontal

If the mass M1 moves downwards with a uniform velocity, find

        (i) the mass of M1,

        (ii) the tension in the horizontal portion of the string

         the horizontal

horizontal

Best Answer

Constant velocity means net acceleration of the system is zero. Or net pulling force on the system is zero, while calculating the pulling force, tension forces are not taken into consideration. Therefore

Constant velocity

Constant velocity

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