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Use the following experimental data of Hook's law experiment , where Ax is the extension of the spring and F is the force. m(g) Ax (m) x103 F - my (N) 20 1.5 0.2 40 3.5 0.4 60 5 0.6 7 0.8 1-What is the aim of Hook's law experiment? 2-Write the formula for Hook's law experiment? 3-Calculate spring constant of the experiment (Kesp) and write its unit? 4-Plot the values of Ax (m) versus F (N), a straight line should be produced? 5-Calculate the slope of the line and write its unit? 6-Find the percentage error (P.E) between the experimental and theoretical values of the spring constant (K)? The theoretical value (Ka)= 13.7 N/mA string is fixed at both ends. The mass of the string is 0.0010 kg and the length is 4.2 m. The string is under a tension of 155 N. The string is driven by a variable frequency source to produce standing waves on the string. Find the wavelengths and frequencies of the first four modes of standing waves. a. A1 = m f1 = Hz b. An = m f2 = Hz c. As = m f& = Hz d. M = m f4 = Hz