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In terms of friction why does a car use more petrol when it has a load on its roof?
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Why does a car use more petrol when it has a load on the roof?
Its answer is very simple that a car uses more petrol when it has to overcome more wind resistance.
How does changing the load affect the force of friction?
Increasing the load typically increases the force of friction because there is more surface contact between the objects, resulting in greater resistance to motion. Conversely, decreasing the load may reduce the force of friction as there is less contact between the surfaces.
Will installing bigger tire consume more petrol for my car?
Yes. Bigger tyres=> more friction => more strain on engine=> more fuel used
What would happen to a pulley system if the load were increased?
Ideal mechanical advantage is the mechanical advantage when there is no friction. It is the mechanical advantage when the efficiency of the pullefy system is 100%. It is a constant for that system of pulleys. Therfore it is not affected by increasing or decreasing the load. But actual mechanical advantage will be less than this ideal mechanical advantage due to friction. In other words the efficiency will be less than 100 %. If the efficiency is 80%, it implies 20% is wasted due to friction while lifting a load. If we increase the load the friction also increases and hence the efficiency will decrease with the load.
How does increased friction affect the actual mechanical advantage of a machine?
Increased friction reduces the actual mechanical advantage of a machine because more of the input force is used to overcome friction rather than move the load. This results in less of the input force being effectively transferred to the load, decreasing the overall efficiency of the machine.
Why does a car use more petrol when it has a load?
When the car is loaded, more energy is needed to propel it. A loaded car feels sluggish so you have to press the gas pedal more, so more fuel is used.
What is the difference between a starter and a choke in terms of their functions?
a choke on a motorbike is when u pull it, it lets more petrol into the engine to help it get started if you start it for the first time but it wastes a bit more petrol and leave the engine running for a while then put it in it should be fine
What is more combustible diesel or petrol?
Petrol is far more comustile compared to Diesel
What is a supreme petrol?
Supreme petrol is one way to say that the gasoline possesses more percentage of hydrocarbon. More the percentage of octane for a given petrol, it will burn more hence giving more energy and less unburnt hydrocarbons. Supreme petrol's are little expensive than regular petrol.
What type of pulley uses more effort than the load to lift the load from the ground?
A fixed pulley requires more effort than the load to lift it from the ground. This type of pulley changes the direction of the force applied but does not provide any mechanical advantage in terms of reducing the effort needed to lift the load.
Why is a hydrogen engine more powerful than a petrol engine?
As hydrogen releases more energy than petrol, H engine is more powerful than petrol .
What is the disadvantage of adding more pulleys to a system of pulleys?
There are two disadvantages:You will have to pull the rope a long distance to move the load a relatively short distance.There will be more loss of energy to friction with more pulleys.
