Distinguish between work,energy and power. If a body of weight 10 Newton is lifted from the floor to table 2 meter above the floor,calculate the potential energy gained. What happeneds to the energy of the body fall off the table and hit the floor?

Question

Distinguish between work,energy a

Answer 1

nd power:

Work: Work is defined as the force applied on an object multiplied by the displacement of the object in the direction of the force. It is a scalar quantity and is measured in joules (J). Work is done when there is a transfer or transformation of energy.

Energy: Energy is the capacity of an object to do work or transfer heat. It is a scalar quantity and is also measured in joules (J). There are various forms of energy such as kinetic energy (energy of motion), potential energy (energy stored in an object due to its position or condition), thermal energy (energy associated with temperature), etc.

Power: Power is the rate at which work is done or energy is transferred. It is defined as the amount of work done in a given time period. Power is a scalar quantity and is measured in watts (W). Mathematically, power is calculated as the ratio of work done to the time taken.

In the given scenario, a body of weight 10 Newton is lifted from the floor to a table 2 meters above the floor. The potential energy gained by the body can be calculated using the formula for gravitational potential energy, which is given by:

Potential energy = weight × height

Potential energy = 10 N × 2 m = 20 J

When the body falls off the table and hits the floor, its potential energy is converted into kinetic energy as it accelerates due to gravity. At the point of impact with the floor, the kinetic energy is then transferred to the floor and the body may bounce back, lose energy through sound or heat, etc. Overall, the energy of the body is transformed into other forms of energy depending on the situation.