Posted on March 23, 2010.
(A) A kg of salami 1.04 is supported by a rope that runs to a spring balance, which is supported by another cord? (A) 1.04 kg sausage is supported by a rope that runs to a spring balance, which is supported by another cord to the ceiling (Fig. 5-35a). What is the reading of the scale, which is marked in units of weight? (B) In Fig. 5-35b salami is supported by a rope which passes around a pulley and a ladder. The opposite end of the scale is attached by a rope to a wall. What is the reading of the scale? (C) In Fig. 5-35C wall has been replaced by a second 1.04 kg sausage on the left, and the Assembly is stationary. What is the reading of the ladder now?
Reading is void because I was hungry and ate the salami!
Seriously, if possible, after the figures, it is difficult to help you by using simple description.
Added:
For the first, the weight or 1.04 kg. For the latter, I suppose you have a string going horizontally to a wall, attached to a scale, then, from the scale of a cord goes over a pulley and salami hangs vertically, which would still 1.04 kg. For the latter, it is a bit difficult to say what the setup is, but if it is a sausage 1.04 kg hanging vertically on the left, the cable goes up over a pulley and down on the other side of the ladder and the other end of the scale has a rope to another salami 1.04 kg also suspended vertically, it would still read 1.04 kg. Whether you hold the ladder, with a ceiling, wall or other salami, it does not affect weight.
a) 1.04 kg. and 13.72N.
b) The same thing.
c) You do not see the pattern, but if the 2nd. Salami is a rope hanging vertically, probably the same.