Dynamics 1

Front

What is static friction?

Back

Static friction is the force that resists the initiation of sliding motion between two surfaces in contact. It acts when an object is at rest and prevents it from moving until a certain threshold force is applied.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other. It acts when an object is in motion and is generally less than static friction.

Front

How do you calculate the maximum static friction force?

Back

The maximum static friction force can be calculated using the formula: F_s(max) = μ_s * N, where μ_s is the coefficient of static friction and N is the normal force.

Front

What is the normal force?

Back

The normal force is the force exerted by a surface perpendicular to the object resting on it. It counteracts the weight of the object and is equal to the object's weight when on a horizontal surface.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object and is calculated as W = m * g, where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

What is Newton's second law of motion?

Back

Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It is expressed as F = m * a.

Front

How do you find the acceleration of an object?

Back

Acceleration can be found using the formula: a = F_net / m, where F_net is the net force acting on the object and m is its mass.

Front

What is tension in a string or rope?

Back

Tension is the force transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

What happens to an object on a frictionless surface when a force is applied?

Back

An object on a frictionless surface will accelerate in the direction of the applied force according to Newton's second law, as there are no opposing forces.

Front

What is the effect of friction on motion?

Back

Friction opposes the motion of objects, causing them to slow down or stop. It is essential for enabling movement, such as walking or driving, but can also hinder motion.