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How can friction be reduced or if its helpful what can be done increase the friction?
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Does streamlining produce more or less friction?
In general it means that there will be less surface friction on the material. On vehicles this can be done by reducing the impact area at the front and by integrating smooth curves for the air to follow. Surface polishing can also increase airflow and reduce friction.
Is friction produced when work is done?
No.
Can work be done by friction?
Yes because work=friction Ă—distance
What can be done to reduce the effect of friction?
Friction on a moving body is dependent on two basic factors and it can be represented as follows Friction force = (Coefficient of friction between the moving surfaces)*( Normal Force between the surfaces) Reducing any or both of the two factors reduce friction. Coefficient of friction can be reduced by: 1. Making the surfaces smoother.(effective for moving bodies in gas,liquid, or on solid/semisolid surfaces) 2. Applying 'Lubricant'. (effective for bodies moving on solid/semisolid surfaces) The normal force can be reduced for bodies in gas and liquids by reducing the press of the medium. (Hence vacuum and high altitude offer less friction than sea level for space crafts). Reduction of the normal force between solid bodies is not practical for machines since this will entirely alter their usefulness. But of course friction couplings, brakes etc use variation of normal force as main criteria for their operation.
If the force applied to an object doesnt make the object move then no friction has been done is this true?
Yes, there is us. Static Friction.
What can be done to increase helpful friction?
sand applied to a slick sidewalk
How does the output work done by machine change when friction is reduced?
Increases
Does streamlining produce more or less friction?
In general it means that there will be less surface friction on the material. On vehicles this can be done by reducing the impact area at the front and by integrating smooth curves for the air to follow. Surface polishing can also increase airflow and reduce friction.
Why does the pressure of a gas in a car tire increase when it is driven through a distance?
This is due to the work done against friction between road and tyre.So the gas pressure increses due to the friction with which heat produced in the tyre in trough distances
Is friction produced when work is done?
No.
What the realationsip between work and mechanical energy?
I think it helps to think - informally - of work as the "transfer of energy". Work is said to be done when you apply a force along a certain distance; and energy is required to do this work. The work done on the system may increase the system's potential energy, or - if done against a force of friction - it may increase its heat energy.
How can the efficiency of an inclined plane be increased?
Efficiency is the ratio of power output to power input. It is not the ratio of forces or distances. You can move a load using less force by reducing the gradient of the plane. But what you gain in reduced force you lose in having to travel a greater distance to raise the load through the same height. There is, therefore, no net advantage. The only way to increase the efficiency is to reduce the friction. This can be done by lubricating the plane, or load (or both), or by placing rollers between the load and the plane - so that there is rolling friction rather than sliding friction.
What can be done to increase the efficiency of the machine?
Mechanical Efficiency is the ratio of Actual mechanical advantage to ideal mechanical advantage.Efficiency will be maximum when Actual mechanical advantage equals that of ideal.But practically not possible.Actual mechanical advantage will be less due to friction,heat,deflection etc.avoiding these loses will increase the machine efficiency.
What friction are used in when you slide on the slide more friction or less friction?
Eat some poo then go vomit in the toilet and ur done
Can work be done by friction?
Yes because work=friction Ă—distance
Does a ramp reduce the amount of work being done in science?
No. It reduces the amount of force required, but it does not reduce the total amount of work. In fact, due to friction, it will probably increase the total amount of work.
What can be done to reduce the effect of friction?
Friction on a moving body is dependent on two basic factors and it can be represented as follows Friction force = (Coefficient of friction between the moving surfaces)*( Normal Force between the surfaces) Reducing any or both of the two factors reduce friction. Coefficient of friction can be reduced by: 1. Making the surfaces smoother.(effective for moving bodies in gas,liquid, or on solid/semisolid surfaces) 2. Applying 'Lubricant'. (effective for bodies moving on solid/semisolid surfaces) The normal force can be reduced for bodies in gas and liquids by reducing the press of the medium. (Hence vacuum and high altitude offer less friction than sea level for space crafts). Reduction of the normal force between solid bodies is not practical for machines since this will entirely alter their usefulness. But of course friction couplings, brakes etc use variation of normal force as main criteria for their operation.
