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A force of 20n gives a ball an acceleration of 4.0 on a level friction less surface what is the mass of the ball?
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Which surface gives the least friction?
Plane surface with negligible friction.
What is the function of coefficient of static friction?
This coefficient of static friction is needed to find the frictional force between a body and a surface on which body has to move. If u (mu) is the coefficient of friction then uR gives the frictional force between moving body and surface. There is no unit for coefficient of friction. Here R is reaction which equals to the weight of the body
What factors influence frictional force?
Friction is a force acting in opposition to the net force on an object. As such it will always take on the same magnitude and the opposite direction to the net force, constantly adjusting itself - up to a certain maximum. The maximum force that friction can exert to impede motion is determined by two factors: * the coefficient of friction; a constant assigned to the specific combination of the two surfaces in contact. * the normal reaction force; the force pushing the surfaces together. Multiplying these two together gives friction's maximum value. If an object is already moving, friction continues to exert the maximum force that it can, and a slightly adjusted 'kinetic friction coefficient' is used to determine its magnitude. Friction coefficients can be slightly affected in turn by further factors, such as temperature.
A block is dragged at constant velocity in a straight-line path across a level surface by a force of 6 N what is the force of friction between the block and the surface?
'Constant velocity' means constant speed and direction. If the speed of the block is constant along the level block, then the net force on it in the forward direction must be zero. (It isn't accelerating.) You're pulling it in the forward direction with a force of 6 N. So the force of friction in the opposite direction must also be 6 N, for a total of zero.
A force of 20 N gives a ball an acceleration of 4.0 ms on a level frictionless surface what is the mass of the ball?
F=mam=F/am=20/4.0m=5Kg
Which surface gives the least friction?
Plane surface with negligible friction.
What is the function of coefficient of static friction?
This coefficient of static friction is needed to find the frictional force between a body and a surface on which body has to move. If u (mu) is the coefficient of friction then uR gives the frictional force between moving body and surface. There is no unit for coefficient of friction. Here R is reaction which equals to the weight of the body
Does a change in force acting on an object change that object's acceleration?
F = ma (force equal mass times acceleration) Therefore a = F/m So acceleration changes in direct proportion to the change in force. Half the force gives half the acceleration.
What factors influence frictional force?
Friction is a force acting in opposition to the net force on an object. As such it will always take on the same magnitude and the opposite direction to the net force, constantly adjusting itself - up to a certain maximum. The maximum force that friction can exert to impede motion is determined by two factors: * the coefficient of friction; a constant assigned to the specific combination of the two surfaces in contact. * the normal reaction force; the force pushing the surfaces together. Multiplying these two together gives friction's maximum value. If an object is already moving, friction continues to exert the maximum force that it can, and a slightly adjusted 'kinetic friction coefficient' is used to determine its magnitude. Friction coefficients can be slightly affected in turn by further factors, such as temperature.
How do you find acceleration given mass and distance?
Not enough information. One equation you can often use is Newton's Second Law: force = mass x acceleration Which, when solved for acceleration, gives you: acceleration = force / mass
A 3000 N force gives an object an acceleration of 15ms2. The mass of the object is?
Just use Newton's Second Law. That is, divide the force by the acceleration.
A block is dragged at constant velocity in a straight-line path across a level surface by a force of 6 N what is the force of friction between the block and the surface?
'Constant velocity' means constant speed and direction. If the speed of the block is constant along the level block, then the net force on it in the forward direction must be zero. (It isn't accelerating.) You're pulling it in the forward direction with a force of 6 N. So the force of friction in the opposite direction must also be 6 N, for a total of zero.
How does a contact force change the motion of an object?
it gives the possibilty of friction which will act in the opposite direction of the motion. This is assuming it is a rough surface, otherwise it makes no difference. Fr=uR where u is the coefficient of friction (pronounced 'mew') hope this helps
A force of 20 N gives a ball an acceleration of 4.0 ms on a level frictionless surface what is the mass of the ball?
F=mam=F/am=20/4.0m=5Kg
Why are the objects easier to push or pull than others?
An object with a greater mass needs more force. Mass is what gives an object resistance to acceleration. Newton's Third Law: force = mass x acceleration, or acceleration = force / mass.
What force gives a mass an acceleration of 9.8 meters second?
Earth's gravity.
Why is it difficult to strike a match on a smooth surface?
Heat necessary to lit a match comes from friction between match head and the surface. Smooth surface gives way less friction.
