Table of Contents
- 1 What happens to the actual mechanical advantage when friction increase?
- 2 What is the mechanical advantage of a machine that increases force?
- 3 What does it mean when a machine has a mechanical advantage?
- 4 What happens to the real mechanical advantage of a machine as you increase the efficiency of the machine?
- 5 What determines mechanical advantage?
- 6 How does increasing the load affect the ideal mechanical advantage and efficiency of a pulley system?
- 7 Are there any machines less then 100% efficient?
- 8 How does a lubricant increase the efficiency of a machine?
What happens to the actual mechanical advantage when friction increase?
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.
What is the mechanical advantage of a machine that increases force?
Mechanical Advantage of Different Types of Machines
| Strength of Force | Distance Over which Force is Applied | Mechanical Advantage |
|---|---|---|
| increases | decreases | >1 |
| decreases | increases | <1 |
| stays the same (changes direction only) | stays the same | =1 |
Does friction reduce mechanical advantage?
Efficiency. Mechanical advantage that is computed using the assumption that no power is lost through deflection, friction and wear of a machine is the maximum performance that can be achieved. In operation, deflection, friction and wear will reduce the mechanical advantage.
What factor affects the mechanical advantage of a machine?
Answer: The energy that you put into making the machine do work is a product of force and displacement. If you have to go further with your input force, than the object is moved, then your advantage is increased. If you go twice as far, you should expect an advantage of 2.
What does it mean when a machine has a mechanical advantage?
: the advantage gained by the use of a mechanism in transmitting force specifically : the ratio of the force that performs the useful work of a machine to the force that is applied to the machine.
What happens to the real mechanical advantage of a machine as you increase the efficiency of the machine?
The ideal mechanical advantage is the mechanical advantage of a machine without friction. The more efficient a machine is, the closer the actual mechanical advantage is to the ideal mechanical advantage.
How does friction affect the machine?
Friction causes machines to slow down, and heat up. It causes a decrease in speed increase in wear on parts. Also friction causes heat which causes metals to expand.
What would be the effect of friction to the mechanical advantage of a machine?
In a machine, friction reduces the mechanical advantage, or the ratio of output to input: an automobile, for instance, uses one-quarter of its energy on reducing friction.
What determines mechanical advantage?
To determine its mechanical advantage you’ll divide the length of the sloped side by the width of the wedge. For example, if the slope is 3 centimeters and the width is 1.5 centimeters, then the mechanical advantage is 2, or 3 centimeters divided by 1.5 centimeters.
How does increasing the load affect the ideal mechanical advantage and efficiency of a pulley system?
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.
How is friction related to the efficiency of a machine?
True Friction is not related to the efficiency of a machine False Actual mechanical advantage and ideal mechanical advantage are not equal True Work output can never be greater than work input True Friction between our feet and the surface we walk on is desirable True A force causing rotation Torque
What’s the mechanical advantage of a force of 30N?
A force of 30N is executed to raise a rock weighting 90N. The actual mechanical advantage is 3.0 All machines are less then 100% efficient True THIS SET IS OFTEN IN FOLDERS WITH… Unit 7 – Quiz 2: Force
Are there any machines less then 100% efficient?
All machines are less then 100% efficient True THIS SET IS OFTEN IN FOLDERS WITH… Unit 7 – Quiz 2: Force 18 terms Super_Pickle_Planet Unit 9 – Quiz 1: Photosynthesis and Food
How does a lubricant increase the efficiency of a machine?
A lubricant will increase a simple machine’s efficiency by decreasing friction, which increases work output. If two swimmers compete in race, does the faster swimmer automatically develop more power? Power depends on work and time, from which you can extrapolate that it depends on force and velocity.