all 6 simple machines

Simple Machines - In all the above examples, a machine either multiplies or reduces the effect of the force that is applied. A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a ste..

A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a steep hill, we soon realize that we gain speed by applying greater force. It is impossible to multiply both the force and gain the speed at the same tim..

Heart Lung Machine - Before surgeons can perform open-heart surgery or heart transplants or even to correct a simple heart defect, they have to be able to open up the heart and expose the chambers. To enable this, circulation and respiration are maintained by the heart - lung ..

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Optics..

Work, Energy and Power..

Question 1 - Question: Answer: Steps of Construction: Step 1: Draw a rough sketch as shown in figure and mark the given measurements. Step 2: Draw a line XY and on it cut off BC = 3.5cm. Step 3: Step 4: Cut off a length BD=5.5cm on BY. Step 5: Join CD. Step 6: Draw the perpendicular bisec..

Machine A can do a work in 6 hours. Machine B and C together can do the same work in 4 hours. If the three machines are being used together, how long will it take to complete the job? => 3 hours or 2 hours or 2 hours 24 minutes or 3 hours 30 minutes..

A machine produces 24 items in 4 hours. How many items does the machine produce in 6 hours? => 40 or 38 or 32 or 36..