According to the Mayo Clinic, skin friction occurs when the skin is resistant to motion, which in turn can lead to bedsores and skin injury. Skin friction is a common reaction to the skin being dragged across surfaces. Skin friction is typically more severe when the skin is moist.
WebMD explains that continual skin friction can lead to chafing: This irritation of the skin typically occurs in between the thighs and under the arms, but can develop anywhere on the body. The severity of skin chafing ranges from mild irritation to painful, crusted sores that require medical attention. Skin chafing can be prevented by decreasing friction to the skin. Skin friction prevention measures include: keeping the skin dry with talcum powder and wearing clothes made from synthetic materials.Learn More
A toilet paper dispenser is an example of a wheel and axle. The rod that supports the roll of toilet paper serves as the axle, and the toilet paper roll serves as the wheel. Like all wheel and axle machines, the toilet paper rotates concentrically around the cylindrical holder, which is fastened in place.Full Answer >
Resistance to change in motion is called inertia. The amount of inertia in an object is directly proportional to its mass; an object with greater mass has more inertia than an object with less mass.Full Answer >
An object's gravitational potential energy is equal to the product of the object's mass times the gravitational field strength times its height (PEgrav = mass * gravity * height). The strength of Earth's gravitational field is 9.8 meters per second, and height is measured starting from a specified surface.Full Answer >
According to BBC, "mechanical motion" is defined as one of the four different motion types in mechanical systems. They are rotary motion, linear motion, reciprocating motion and oscillating motion.Full Answer >