Q11 of 805 Page 156

In case of negative work the angle between the force and displacement is

In case of negative work, the angle between the force and displacement is 180° i.e. force and displacement are in opposite directions.


Formula for work done= F× d × cos θ at θ=180°


W < 0 (negative), that means the system is losing its energy.


The following table summarizes the same:


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