A wave pulse is travelling on a string whose length is 0.7m and linear mass density 6.4× 10- 3kgm- 1 under a load of 80kgf . Calculate the time taken by the pulse to traverse the string?

Question

A wave pulse is travelling on a string whose length is 0.7m and linear mass density 6.4× 10- 3kgm- 1 under a load of 80kgf . Calculate the time taken by the pulse to traverse the string? (A) 2 × 10-3 s (B) 3 &times; 10-3 s (C) 4 &times; 10-2 s (D) 5 &times; 102 s

Tardigrade Admin · Accepted Answer

Here, textT = 80 kgf = text= 80 × text 9 text.8 N ; m =6.4 × 10-3 kg m -1 Now, upsilon = √( textT/ textm) = √(8 0 × 9 ⋅ 8/6 ⋅ 4 × 1 0- 3) = 3 5 0 textm texts-1 Therefore, time taken by the wave pulse to traverse 0.7 m length of the string, t = ( l / upsilon) = ( text0 text. 7/3 5 0) = 2 × 1 0- 3 s

Q. A wave pulse is travelling on a string whose length is $0.7 m$ and linear mass density $6.4 \times 1 0^{- 3} k g m^{- 1}$ under a load of $80 k g f$ . Calculate the time taken by the pulse to traverse the string?

2 × 10^-3 s

3 × 10^-3 s

4 × 10^-2 s

5 × 10² s

Q. A wave pulse is travelling on a string whose length is 0.7m and linear mass density 6.4×10−3kgm−1 under a load of 80kgf . Calculate the time taken by the pulse to traverse the string?

2 × 10-3 s

3 × 10-3 s

4 × 10-2 s

5 × 102 s

Here, T = 80 kgf = = 80 × 9.8 N ; m=6.4×10−3kgm−1 Now,υ=mT​​=6⋅4×10−380×9⋅8​​=350m s−1 Therefore, time taken by the wave pulse to traverse 0.7 m length of the string, t=υl​=3500.7​=2×10−3 s

Q. A wave pulse is travelling on a string whose length is $0.7 m$ and linear mass density $6.4 \times 1 0^{- 3} k g m^{- 1}$ under a load of $80 k g f$ . Calculate the time taken by the pulse to traverse the string?

2 × 10^-3 s

3 × 10^-3 s

4 × 10^-2 s

5 × 10² s