No, the ideal is without friction.
The mechanical Advantage is FORCE TIMES DISTANCE
friction opposes the mechanical advantage of a simple machine. for example, if you had a inclined plane that gave you an advantage of 3:1 (3 times longer then it is high) the frictional force cause by an object being pushed up the ramp would be in the direction opposite to the direction of motion equal to u*N (mu times the normal force of the object) so for a 10 kg object being pushed up the ramp, under normal gravity = 9.81 N and a coefficent of friction = .3, the frictional force would be equal to 3 N. if you were pushing the object on flat ground with a force of 15N, you would actually need 18 N to maintain the same speed of having no friction appling this to the ramp, if 15N is needed to push on flat ground, only 5 N would be needed to push the object up a 0 friction ramp, and 8 N would be needed to push it up a ramp with friction to maintain the same speed. this is true for all simple machines, and it only depends on where the friction is being created, weather it be friction between a screw and wood, a rope and the pulley, or the fulcrum and a lever
It's 1. IMA = Distance in / Distance out. A single pulley doesn't do anything toward mechanical advantage, it changes the direction of the force. Not always. A single-axeled pulley (the typical pulley) has an IMA of 1, having one axel. If there was a second axel, then the IMA would = 2, so on and so forth. The easy way to do it is IMA = # of axels.
One.Since the question clearly states that the machine only changes the direction there can be no mechanical advantage gained.In order for a machine to have a mechanical advantage greater than 1, the machine must be able to change two or more of these factors:The amount of force exertedThe distance over which the force is exertedThe direction over which the force is exerted
the mechanical advantage would be 3 because you have to do 6 divided by 2.
Increase the advantage.
6
The mechanical Advantage is FORCE TIMES DISTANCE
Since the heights are the same, then the longer ramp.
the formula for the mechanical advantage of an inclined plane is the length divide by the height.
Length/ Hieght
Its the reciprocal of the sine of the ramp angle. > 1 / ( sin ( ramp angle ) )
The height of the Great Pyramid = 139 metres The slope of a ramp with a mechanical advantage of 4 = 4x139 = 556m
The height of the Great Pyramid = 139 metres The slope of a ramp with a mechanical advantage of 4 = 4x139 = 556m
The height of the great pyramid = 139 metres The slope of a ramp with a mechanical advantage of 4 = 4x139 = 556m
The Mechanical advantage becomes smaller decreasing the amount of work that needs to be done. It will take less effort to lift the object or load
The mechanical advantage is 8/2 = 4.