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Front

What is work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, in the direction of the force. It is measured in joules (J).

Front

What is the formula for calculating work?

Back

The formula for work (W) is W = F × d × cos(θ), where F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.

Front

What is the unit of work?

Back

The unit of work is the joule (J), which is equivalent to one newton meter (N·m).

Front

What does it mean if work done is 0 J?

Back

If the work done is 0 J, it means that either no force was applied, no distance was moved, or the force applied was perpendicular to the direction of motion.

Front

What is the relationship between force and work?

Back

Work is directly related to the force applied; greater force results in more work done, provided the distance moved is constant.

Front

What is gravitational force?

Back

Gravitational force is the force of attraction between two masses, such as the Earth and an object, which causes the object to experience weight.

Front

How do you calculate gravitational force?

Back

Gravitational force (weight) can be calculated using the formula F = m × g, where m is the mass of the object and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

What is the significance of the angle in the work formula?

Back

The angle (θ) in the work formula determines how much of the applied force contributes to the work done; if θ is 0°, all the force contributes to work, while if θ is 90°, no work is done.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, commonly gravitational potential energy, calculated as PE = mgh, where h is height.