Work done is defined in science as ______.
force × displacement
The correct answer is force × displacement.
Work done is a scalar quantity representing the energy transferred to or from an object via the application of force along a displacement. It's calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force.
Let's examine why the other options are incorrect:
- Force / displacement: This would represent the inverse relationship, not how work is calculated.
- Force × distance: While close, this isn't precise. Work is only done if the displacement is *in the direction of the force*. If the force is applied at an angle, only the component of the force in the direction of displacement contributes to work done. The more accurate formulation considers displacement specifically.
- Force / distance: This would represent the inverse relationship again and doesn't reflect the energy transfer involved in work.
Therefore, only "force × displacement" accurately defines work done in science.
Similar Questions
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- In practice, the work output of a machine is ______ the work input due to the effect of friction.
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- A pump is required to lift 600 kg of water per minute from a well 25m deep and to eject it with a speed of 50 m/s. If \(g = 10 \text{ m/s}^2\), the power required to perform the above task is
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Important Questions from Work Power and Energy
Which of the following is an example of potential energy?
_______ is one of the chemical used to produce Ocean Thermal Energy.
A body of mass 2kg is thrown up vertically with a kinetic energy of 500J. If the acceleration due to gravity is 10 m/s2, the height at which the kinetic energy of the body becomes half of the original values is _____
Arjun has a mass of 50 kg, he eats banana of 1000 calories. If this energy is used up to lift him from the ground, the height to which he can climb is _______. Take g = 10 m/s2 and 1 calories = 4.2 Joule.
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then kinetic energy of translation is:
