Friction typically increases when the mass increases because there is more force pressing the surfaces together. However, the type of surfaces and the force pressing them together also affect friction levels.
Friction will decrease if the coefficient of friction decreases. This can be caused by having a smother surface up to a point. (When two surface are TOO smooth the friction actually increases due to molecular attraction.)
If the volume of a gas increases, the density of the gas will decrease. This is because density is mass divided by volume, so as the volume increases while the mass stays constant, the density will decrease.
A force is a force, and independent of whatever it is is being applied to. One can discuss inertial, gravitational, or a frictional forces, and these things increase proportionally with mass increases.
Friction will generally increase as the incline increases. This is because the normal force acting on the object will also increase with the angle of the incline, resulting in greater friction between the surfaces in contact.
Rowing a boat increases friction. The oars create resistance against the water, which generates friction that helps propel the boat forward.
mass effects friction by making the object go slower as mass increases
Friction will decrease if the coefficient of friction decreases. This can be caused by having a smother surface up to a point. (When two surface are TOO smooth the friction actually increases due to molecular attraction.)
The force of sliding friction is directly proportional to the mass of the object experiencing the friction. As the mass increases, the force of sliding friction also increases. This relationship is described by the equation: force of friction = coefficient of friction * normal force, where the normal force is equal to the weight of the object (mass * acceleration due to gravity).
Decrease
If the volume of a gas increases, the density of the gas will decrease. This is because density is mass divided by volume, so as the volume increases while the mass stays constant, the density will decrease.
A force is a force, and independent of whatever it is is being applied to. One can discuss inertial, gravitational, or a frictional forces, and these things increase proportionally with mass increases.
Friction will generally increase as the incline increases. This is because the normal force acting on the object will also increase with the angle of the incline, resulting in greater friction between the surfaces in contact.
When the temperature of lava increases, its viscosity will decrease. Viscosity is a measure of the magnitude of internal friction of a substance.
As the mass of a substance increases while its volume stays constant, its density will also increase. Conversely, if the mass of the substance stays constant while its volume increases, the density will decrease. This is because density is directly proportional to mass and inversely proportional to volume.
Density = mass / volume. Therefore, if volume increases and mass doesn't change, density will obviously decrease.
If volume increases while mass remains the same, the density will decrease.
Rowing a boat increases friction. The oars create resistance against the water, which generates friction that helps propel the boat forward.