Recent content by voyager221

That is what I thought. Makes sense then why house B (at the bottom of the cliff) is the correct answer

How can you tell from a diagram of a ships propeller the direction it is moving ie clockwise or anti-clockwise. Am I correct they don't all move clockwise? What factors determine it?

I will write out the question. 'Which picture shows how the two boys will balance better'? (If equal, mark C) Both diagrams show the fulcrum of the seesaw in the same location. Diagram A has the slimmer boy on the far left which is the furthest side from the fulcrum. The larger boy is on...

Well if I describe the question do you have any idea what it could mean? Might it mean the hose is sprayed from the reservoir? 'At which house will a hose throw water further'? A reservoir is shown at the top of a cliff slightly below which is house A. Immediately below A there is a...

If a reservoir was at the top of a cliff and a house was immediately below it with another house at the bottom of the cliff would the latter throw the water further from a hose due to the steep descent?

Hi I thought if there is a heavier person and a lighter person the heavier person would sit nearer the fulcrum to make the seesaw balance as weightxlength must equal. However on this question 'which picture shows how the two boys will balance better?' the answer is the one with the bigger...

On question 1 why is there tension on the opposite side and compression on the other exactly? Is tension caused because the chain supports from the far end of the horizontal (utilising the entire horizontal and upright structure) instead of part way along and at a diagonal away from the sign in...

Thanks a good clear reply

Question 1: On a typical wooden hanging sign you have three pieces of beam. One main beam extends upwards from the ground and at the top a beam slices through this (so that on one side of the slicing beam there is more beam than the other) with the sign hanging down from the longer section...

If rope is wrapped around a pipe and two men are lifting it up why is it easier to lift when the rope is loose around the pipe (A) and harder when the rope is tied tightly to the pipe in a knot at both ends (B) ? I presumed this was because on A the weight is less concentrated?

Hi Yes I mean a system of pulleys and by shaft I mean a grooved wheel along which cord passes so yes pulley. I'm guessing you mean that the rope goes under and around a pulley, and another rope/wire/whatever connects the axle of this pulley to the parcel correct The rope starts at the bottom...

Sorry for the late reply I hope you are still with me on this. I don't know how to send a diagram it is in a book however I will attempt to describe it. Pulley A shows a rope with no shaft at the top (however could this be a print error?) and a single rope descending to a shaft below which the...

Thanks. The other question is if the check valve jams and stays closed why is it less force will be required to move the piston down?

Sorry to confuse the angle isn't that important. Imagine a small wooden crate on wheels with a load on it and there is a lever attached to the crate which you hold to push the crate along the ground. If the lever is stretched out and lowered so that you are further from the crate it is...

Why is it when a tread on one side of a tank stops the other side which is still moving will 'skid' in the direction of that tread? This is used to steer a tank but what is the physics behind this please