A guy wire attached to a vertical pole of height 18 m is 24 m long and has a stake attached to the other end . How far from the base of the pole should the stake be driven so that the wire will be taut ?

A circus artist is climbing a 20m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground.Find the height of the pole, if the angle made by the rope with the ground levelis 30^(@) ( see Figure)

The cable of a uniformly loaded suspension bridge hangs in the form of a parabola . The roadway which is horizontal and 100 m long is supported by vertical wires attached to the cable, the longest wire being 30 m and the shortest being 6 m. Find the length of a supporting wire attached to the roadway 18 m from the middle.

The number density of free electrons in a copper conductor is estimated as 8.5xx10^(28)m^(-3) . How long does an electron take to drift from one end of a wire 3.0m long to its other end? The area of cross-section of the wire is 2.0xx 10^(-6)m^(2) and it is carrying a current of 3.0A.

Nazima is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that her rod to the fly) is taut, how much string does she have out(see fig)? If she pulls in the string at the rate of 5 cm per second, what will be the heriozontal distance of the fly from her after 12 seconds.