Work, Machines & Mechanical Advantage

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = ma).

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it. It measures how much a machine multiplies force.

Front

What factors affect the efficiency of simple machines?

Back

Friction and gravity (weight) affect the efficiency of simple machines, causing it to be less than 100%.

Front

Define force in physics.

Back

Force is any push or pull on an object that can cause it to accelerate.

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = mass (m) × acceleration (a).

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

According to Newton's Second Law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is output force also known as?

Back

Output force is also known as resistance or load.

Front

What is the definition of efficiency in the context of machines?

Back

Efficiency is the ratio of useful work output to total work input, expressed as a percentage.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, acting parallel to the surfaces in contact.

Front

What is the significance of the conservation of force in machines?

Back

The conservation of force principle states that energy cannot be created or destroyed, only transformed, which is crucial in understanding how machines work.