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 surface is
0.25. The inclined plane makes an angle of
37∘ with the horizontal. If the mass
M1 moves downwards with a uniform velocity. find the mass of
M1 in
kg.