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The work done by a force of 10N in moving an object by 5 meters in the direction of force is:
50 Joules
2 Joules
15 Joules
25 Joules
50 Joules
The correct answer is Option A (50 Joules). Work is defined as the product of the force applied to an object and the displacement of the object in the direction of the force.
The correct answer is Option A (50 Joules). Work is defined as the product of the force applied to an object and the displacement of the object in the direction of the force.
Pushing a grocery cart straight ahead across a store floor; the energy you expend to move it forward represents the work done.
W=F⋅s⋅cos(θ) — General formula for work done
W=Fimess — Work done when force and displacement are in the same direction
Work is calculated using the scalar product of force and displacement vectors. When the force and displacement are in the same direction, the angle between them is zero, making cos(0°)=1, which simplifies the formula to W=Fimess.
Work is a scalar quantity having magnitude only, despite being the dot product of two vectors.
The SI unit of work is the Joule (J), equivalent to a Newton-meter (N⋅m).
If the displacement is zero, the work done is zero regardless of the magnitude of the force applied.
Lifting an object vertically against gravity
Pushing a box across a horizontal surface
1 Joule is defined as the amount of work done when a force of 1 Newton displaces an object by 1 meter in the direction of the force.
Options B, C, and D are incorrect because they arise from incorrect arithmetic operations on the given values.
A is correct — The work done is calculated by multiplying force (10 N) by displacement (5 m), yielding 50 Joules.
Always verify the angle between the force and displacement vectors; if they are perpendicular (90°), the work done is zero because cos(90°)=0.
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