Work Energy And Power Question 65
Question: A force (where K is a positive constant) acts on a particle moving in the xy-plane. Starting from the origin, the particle is taken along the positive x-axis to the point (a, 0) and then parallel to the y-axis to the point (a, a). The total work done by the force F on the particles is [IIT 1998]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
While moving from (0,0) to (a,0)
Along positive x-axis, y = 0
Because force is perpendicular to displacement
Then particle moves from
The first component of force,
The second component of force i.e.
So net work done on the particle