Question

a mass of ikg is attached to a spring produce an extension of 0.1cm. its spring constant is
100N/m
10N/m
1000N/m
1N/m

Answer 1

f=-kx
f=kx
k=f/x
k=(1*10)/(0.1*10^-2)= 10,000 N/m
but this choice is not availble

Answer 2

IS it 1 kg?

Answer 3

no its answer is 100

Answer 4

From which book are you asking this question? and secondly which combination are you studying in F.Sc.

Answer 5

first year book of fsc

Answer 6

which page?

Answer 7

are you premed or pre-engr?

Answer 8

i m prepare entry test
this question is book kips

Answer 9

i m premed

Answer 10

i get it .......you are on the chapter from oscillations?

Answer 11

yes

Answer 12

the mass is 1 kg..... g=10m/s^2......so the external force acting on the spring is 10 newton

Answer 13

the extention in the string is 0.1cm=0.1*10^-2

Answer 14

divide the first by the second what do you get in N/m?

Answer 15

10/(0.1*10-2) = 10*100*10=10000 N/m definitely......unofficial entry test book not issued by testing authority can have lots of errors....

Answer 16

f=mg=kx
0.1cm=.001m
1kg*10m/s^2=k*0.001m
10N/.001m=10000N/m

Answer 17

The above options are incorrect because.
1kg*10m^s2=! 1000N/m*.001m or 100N/m *.001m and etc