A 1.50-m string of weight 0.0125 N is tied to the ceiling at its upper end, and the lower end supports a weight W. Ignore the ve
ry small variation in tension along the length of the string that is produced by the weight of the string. When you pluck the string slightly, the waves traveling up the string obey the equation: y(x,t) = (8.50 mm)cos(172 rad/m x − 4830 rad/s t)Assume that the tension of the string is constant and equal to W. (a) How much time does it take a pulse to travel the fulllength of the string? (b) What is the weight W? (c) How many wavelengths are on the string at any instant of time? (d) What is the equation for waves traveling down the string?
Work = force * distance. <span>You must produce twice as much energy as we are lifting the weight twice as high. </span> <span>But because you aren't increasing the force, you need to increase the length of the ramp instead. </span> <span>The new length will be twice as great as the previous length. </span> <span>So 8 metres is required. </span>