Work & Simple Machines

Front

What is Work in physics?

Back

Work is defined as the product of force and the distance over which it acts. It is calculated using the formula: Work (W) = Force (F) × Distance (d). The unit of work is Joules (J).

Front

How do you calculate the work done when a force is applied?

Back

Work done can be calculated using the formula: Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula: PE = mass (m) × gravity (g) × height (h).

Front

What is Mechanical Advantage (MA)?

Back

Mechanical Advantage is a measure of the force amplification achieved by using a tool, mechanical device, or machine. It is calculated as the ratio of the output force to the input force.

Front

How do you calculate the Mechanical Advantage of a lever?

Back

The Mechanical Advantage of a lever is calculated as the ratio of the length of the effort arm to the length of the resistance arm: MA = Length of Effort Arm / Length of Resistance Arm.

Front

What is the Mechanical Advantage of a pulley system with 2 supporting ropes?

Back

The Mechanical Advantage of a pulley system is equal to the number of supporting ropes. For a system with 2 supporting ropes, MA = 2.

Front

What is the purpose of an inclined plane?

Back

An inclined plane is used to reduce the amount of force needed to lift an object by increasing the distance over which the force is applied.

Front

How do you calculate the Mechanical Advantage of an inclined plane?

Back

The Mechanical Advantage of an inclined plane is calculated using the formula: MA = Length of Incline / Height of Incline.

Front

What is the unit of work?

Back

The unit of work is the Joule (J), which is defined as the work done when a force of one newton displaces an object by one meter.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object, resulting in a change in its energy.