Answer:
WB = 12 N
Explanation:
Solution:
- The relationship between wavelength (λ) and velocity (v) is given as:
v ∝ λ
- Both wavelength and and velocity are proportional. For the case B, we see that wavelength λ is halved. From using the above relation we can also say that velocity (v) is also halved.
- The relationship between velocity (v) and tension force (T) in the string is given by:
v^2 ∝ T
- We saw that if wavelength (λ) is halved, velocity (v) is halved then from the above relationship we see that Tension force T is reduced 4 times.
- Since the tension force T in part A is:
TA = m*g = WA = 48
- The Tension force in part B, TB is reduced 4 times as follows:
TB = 0.25*m*g = WB = 12 N
