GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is represented by the area under a force-displacement graph?
A
rate of change of kinetic energy
B
change in momentum
C
work done
D
acceleration
Explanation: 

Detailed explanation-1: -A Force-Displacement graph will have force (in N) on the vertical axis and displacement (in m) on the horizontal axis. The area of the graph is = F.s. This quantity also represents the work done on the object.

Detailed explanation-2: -The product of force and displacement is the work done by the force. Therefore the area under a curve with force on the Y-axis and displacement on the X-axis will represent the work-done.

Detailed explanation-3: -Displacement-time graphs show how the displacement of a moving object changes with time. A sloping line on a displacement-time graph shows that the object is moving. In a displacement-time graph, the slope or gradient of the line, is equal to the velocity of the object.

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