Question

A water tank of height 3.6m is 3/4 full. Determine the force exerted on a thin metal plate resting the bottom of the tank if the plate has an area of 2.5cm2, g=10m/s2, the density of water is 1000kg/m3 and atmospheric pressure=100,000 Pa

Answer 1

Answer:

Suppose the length of a spring varies with respect to a weight attached to it. If the length of a spring is 6 cm when a weight of 1 kg is attached and 9 cm when a weight of 3 kg is attached, then which of the following statements is true?

The original length of the spring(when no weight is attached) is 4.5 cm.

The original length of the spring(when no weight is attached) is 5 cm.

The length of the spring will be 13.5 cm when a weight of 6 kg is attached.

The length of the spring will be 12 cm when a weight of 5 kg is attached.