Friction between the ramp and the object will require a greater input or effort force to overcome the resistance. In order to obtain the desired output force for a machine with friction, the ideal input force or effort must be increased by the amount of friction. This will reduce the force mechanical advantage.

Friction is another force that energy gets “wasted” on in the dragging. Therefore, the machine gives you less mechanical advantage when too much friction is involved because it wastes energy. It also makes it less efficient!

The ideal mechanical advantage is the mechanical advantage of a machine with no inefficiencies. The actual mechanical advantage is the mechanical advantage of a real machine with all of the inefficiencies. The actual mechanical advantage is the ratio of the output force to the input force.

Explanation:

1. Moving the fulcrum closer to the load will increase the mechanical advantage.
2. Moving the effort farther from the fulcrum will increase the mechanical advantage. This may require a longer lever.

Increasing the load will add to the friction, thus reducing the efficiency of the system. The ideal mechanical advantage won’t change since the IMA neglects friction.

The ideal mechanical advantage (IMA) of an inclined plane is the length of the incline divided by the vertical rise, the so-called run-to-rise ratio. The mechanical advantage increases as the slope of the incline decreases, but then the load will have to be moved a greater distance.

It takes into account the force needed to overcome friction. The ideal mechanical advantage of a machine reflects the increase or decrease in force there would be without friction. It is always greater than the actual mechanical advantage because all machines must overcome friction.

The mechanical advantage (MA) of a machine is the factor by which it multiplies any applied force. Ideally, the two ratios are equal, and it is simpler to calculate the ratio of the distance the effort moves to the distance the resistance moves; this is called the ideal mechanical advantage (IMA).

The Actual Mechanical Advantage AMA is equal to: The ideal mechanical advantage, IMA, is the same but in absence of FRICTION! In this case you can use the concept known as CONSERVATION of ENERGY.

Simple Machines | Short/Long Answer Questions Q23) How does the friction at the fulcrum affect the mechanical advantage of the lever? Solution: Friction at the fulcrum reduces the mechanical advantage.

The friction generates heat, which is an energy that should be converted in movement. That energy, by the form of heat, is a loss. Decreasing the friction, by lubrication, you will decrease the losses and increase efficiency.

– Answers How does friction affect the mechanical advantage of a simple machine? friction opposes the mechanical advantage of a simple machine.

The ideal mechanical advantage is always greater than the actual mechanical advantage because all machines have to overcome friction. Ideal mechanical advantage can be calculated with the equation: Look at the ramp in the Figure below.

The mechanical advantage for friction belt drives is given by. Chains and belts dissipate power through friction, stretch and wear, which means the power output is actually less than the power input, which means the mechanical advantage of the real system will be less than that calculated for an ideal mechanism.

If a and b are distances from the fulcrum to points A and B and if force FA applied to A is the input force and FB exerted at B is the output, the ratio of the velocities of points A and B is given by a / b so the ratio of the output force to the input force, or mechanical advantage, is given by