Question

A block of mass 10 kg is suspended through two light
spring balances as shown in figure (5-Q2).

Answer 1

Which option is correct & why??????????????????????????????????????????????????

Answer 2

(a) Both the scales will read 10 kg.
(b) Both the scales will read 5 kg.
(c) The upper scale will read 10 kg and the lower zero.
(d) The readings may be anything but their sum will he
10 kg.

Answer 3

Please somebody help me:)

Answer 4

Since the question says "2 light spring balances" that tells me to ignore their mass. Therefore, both scales will read 10kg because the some of the mass as seen by both scales is just 10kg.

Answer 5

err *some = sum....sorry about that :)

Answer 6

oh ok gt it thanx:)

Answer 7

If you want to read more:

http://en.wikipedia.org/wiki/Spring_scale

Where it confirms the above by stating: "If two spring scales are hung one below the other in series, each of the scales will read the weight of the body hung on the lower scale. The scale on top would read slightly heavier due to being stretched by the weight of the lower scale."

Answer 8

thanx a lot
i m reading it:)

Answer 9

Cool :) Good luck!

Answer 10

Hi, is there any theoretical value for springs connected in a series method?