A 12.0 kg salami is supported by a cord that runs to a spring scale, which is su

Question

A 12.0 kg salami is supported by a cord that runs to a spring scale, which is supported by another cord from the ceiling. What is the reading on the scale?

Consider the following. Spring scale Spring Scale b) Spring scale (a) (a) A 12.0 kg salami is supported by a cord that runs to a spring scale, which is supported by another cord from the ceiling (Fig. a). What is the reading on the scale? (b) In Fig. b the salami is supported by a cord that runs around a pulley and to a scale. The opposite end of the scale is attached by a cord to a wall. What is the reading on the scale? (c) In Fig. c the wall has been replaced with a second 12.0 kg salami on the left, and the assembly is stationary. What is the reading on the scale now?

Explanation / Answer

a)

reading on the scale = m * g

reading on the scale = 12 * 9.8

reading on the scale = 118 N

b)

for the pulley to scale

reading on the scale = m * g

reading on the scale = 12 * 9.8

reading on the scale = 118 N

c)

for the stationary salami

reading on the scale = m * g

reading on the scale = 12 * 9.8

reading on the scale = 118 N

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