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..
Simple Machines
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..
Fixed Pulleys
We can think of a single fixed pulley as a lever of class I where the fulcrum is at the centre and the load and effort arm have the same length. (shown in the figure below) Fixed Pulleys If you pass a string over the pulley with one end carrying a weight and the other ..
We can think of a single fixed pulley as a lever of class I where the fulcrum is at the centre and the load and effort arm have the same length. (shown in the figure below) Fixed Pulleys If you pass a string over the pulley with one end carrying a weight and the other ..Force Work Power Energy and Machines Summary
Summary - Machine is a device that is used to multiply force, or to gain speed, or to change the direction of a force, or transform energy. Levers, pulleys, inclined plane and gears are some of the examples of simple machines..
Summary - Machine is a device that is used to multiply force, or to gain speed, or to change the direction of a force, or transform energy. Levers, pulleys, inclined plane and gears are some of the examples of simple machines..Heart Lung Machine
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 ..
Summary Machine is a device that is used to multiply force, or to gain speed, or to change the direction of a force, or transform energy. Levers, pulleys, inclined plane and gears are some of the examples of simple machines. ..
Machine is a device that is used to multiply force, or to gain speed, or to change the direction of a force, or transform energy. Levers, pulleys, inclined plane and gears are some of the examples of simple machines. ..Block and Tackle
.for (b) Each block containing one or more pulleys Figure (c) above shows a system of four pulleys while figure (d) shows a system of five pulleys. ..for (c) .for (d) The load to be raised is attached to hook on the frame of the lower block and the effort E is applied t..
.for (b) Each block containing one or more pulleys Figure (c) above shows a system of four pulleys while figure (d) shows a system of five pulleys. ..for (c) .for (d) The load to be raised is attached to hook on the frame of the lower block and the effort E is applied t..The Inclined Plane
A heavy load may be raised more easily by pulling it up along a sloping surface than by lifting it vertically. For example, heavy barrels are often loaded into vans by passing two ropes round them and hauling them up an incline formed by two stout planks held apart by iron rods. As seen in figure b..
A heavy load may be raised more easily by pulling it up along a sloping surface than by lifting it vertically. For example, heavy barrels are often loaded into vans by passing two ropes round them and hauling them up an incline formed by two stout planks held apart by iron rods. As seen in figure b..Levers
A simple crowbar can be used to lift a heavy rock with a small effort. The crowbar is an example of a lever. The use of levers was known to the ancient Greeks, and it is reported that Archimedes once remarked "Give me a lever long enough and I will move the world" A lever is a rigid rod c..
Sonometer
A sonometer, also called a monochord, was invented by Pythagoras (580-500 B.C.). It is a simple instrument used to verify the laws of stretched strings and to determine the frequency of a tuning fork. It consists of a long hollow rectangular wooden box (w) called the sound box, having..
A sonometer, also called a monochord, was invented by Pythagoras (580-500 B.C.). It is a simple instrument used to verify the laws of stretched strings and to determine the frequency of a tuning fork. It consists of a long hollow rectangular wooden box (w) called the sound box, having..See what our Users say :
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