Question
Question: A hydrogen atom has mass 1.68 × 10<sup>-27</sup>kg. When attached to a certain massive molecule it o...
A hydrogen atom has mass 1.68 × 10-27kg. When attached to a certain massive molecule it oscillates with a frequency 1014 Hz and with an amplitude 10-9 cm. Find the force acting on the hydrogen atom.
A
2.21 × 10-9 N
B
3.31 × 10-9 N
C
4.42 × 10-9 N
D
6.63 × 10-9 N
Answer
6.63 × 10-9 N
Explanation
Solution
ω2 = k/m or 4π2f2m = k
or F = kx0 = 4π2f2mx0
or F = 4 × π2 × 1028 × 1.68 × 10-27 × 10-11
= 6.63 × 10-9 N.