One
This is because the actual mechanical advantage is the actual calculation found after dividing the effort force by the output force. Ideal mechanical advantage is what many people would call an estimate. When estimating mechanical advantage, the numbers are always rounded. This makes actual mechanical advantage less. Sources: Science teacher
The thread running around the screw is an inclined plane. If you were to straighten it out, it would be an inclined plane. The screw itself can be considered a combination of wedge and inclined plane.
The mechanical advantage of an inclined plane is equal to length divided by height (l/h). Therefore, if the length is less than than the height, the mechanical advantage would be less than one.
The proper thread notation for a 40 mm screw with a 14 mm thread and a 1.5 mm pitch would be M14x1.5. In this notation, "M" indicates a metric thread, "14" represents the nominal diameter of the screw in millimeters, and "1.5" signifies the pitch of the thread in millimeters. This notation is commonly used in engineering and manufacturing to specify the thread details of screws and bolts.
Mainly because that's the only kind you can ever get. If you hold out until you find a machine with a mechanical advantage of not less than 1, you'll never get the job done. Or even started.
You would have to lift a given mass (m) a certain distance(h) and work out the amount of energy(work) this has taken using W=mgh, where g is acceleration due to gravity. Then you would have to use a torque metre to wind the jack , and using the number of turns needed to lift the weight, calculate the amount of work done, using E= torque x angle travelled(in radians). In an ideal frictionless jack the two figures would be the same. The difference between the two is the amount of energy lost to friction.The mechanical advantage you mention is related to the pitch of the screw or thread.That is,a fine thread pitch can lift more weight using only human force, but with a greater number of turns.I should also mention that in a diamond shaped,lever type jack, the mechanical advantage increases, and the torque required decreases, the higher the jack is extended. It becomes a little more complicated, involving vectors, angles, and maybe even calculus. Perhaps another poster could help here.
Bigger threads would make a sheet metal screw or wood screw bite in better, but it would make it harder to turn. A machine screw would need a nut with matching threads, but there wouldn't be much of an advantage.
for one movable pulley you would get a mechanical advantage of 2
that is a great question. a screw that has the rims, swerly things, father apart would have a lower machanical advantage because it takes less force to get them in. a screw with the rims closer together would have a higher IMA because it would be harder to get it out.i didnt explane it very well sorry it is hard to explane.
A longer lever would typically have more mechanical advantage than a shorter lever. Mechanical advantage is calculated by dividing the length of the effort arm by the length of the resistance arm; therefore, the longer the effort arm, the greater the mechanical advantage.
To measure the mechanical advantage of a bicycle, you would compare the input force applied by the rider to the output force produced at the wheels. The mechanical advantage is calculated by dividing the output force by the input force. In the case of a bicycle, the mechanical advantage helps determine how efficiently the rider's pedaling translates into forward motion.
A decrease in height of the inclined plane will result in a lower mechanical advantage. Mechanical advantage is calculated as the ratio of the length of the inclined plane to the vertical height. Therefore, as the height decreases, this ratio decreases, leading to a lower mechanical advantage.
This is because the actual mechanical advantage is the actual calculation found after dividing the effort force by the output force. Ideal mechanical advantage is what many people would call an estimate. When estimating mechanical advantage, the numbers are always rounded. This makes actual mechanical advantage less. Sources: Science teacher
Increasing the length of a ramp does not change the mechanical advantage, as mechanical advantage depends on the ratio of the output force to the input force. The length of the ramp affects the distance over which the force is applied, but not the mechanical advantage itself.
If I would be knowing, I would have not asked.
The thread running around the screw is an inclined plane. If you were to straighten it out, it would be an inclined plane. The screw itself can be considered a combination of wedge and inclined plane.
If a machine was 100 percent efficient, the AMA would be equal to the IMA. This is because in an ideal scenario where the machine loses no energy to friction or other factors, the AMA (actual mechanical advantage) would be the same as the IMA (ideal mechanical advantage).