Question

a body of mass 10kg is moving at a constant speed of 20m/s over a frictionless surface. The work done by the weight is

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its very urgent

Answer 1

The work done by weight (gravity) here would be zero since the forces and displacement are perpendicular to each other.

Answer 2

Answer:

Zero

Explanation:

Given:

Mass= 10kg

speed = 20 m/s

To find:

Work done

Solution:

The definition of work done includes both the forces applied to the body and the total displacement of the body.

Before this block, a constant force F is present. The goal of this force is to move the body d metres in a straight line in the force's direction.

When we apply force "F" to a block, the body moves with some acceleration or, additionally, its speed increases or decreases depending on the direction of the force. The system's kinetic energy changes as speed increases or decreases. Since we are aware that energy cannot be created or destroyed, it must be changed into another form. This perspective refers to it as completed work. When negative energy is finished, the energy declines, and when positive energy is finished, the energy rises. Now that we understand how to assess work done,

The work that the weight does in this situation will be 0 because it is perpendicular to the displacement.

Define the work done by a constant force. Write its SI unit and define this unit.

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