The relation between the displacement of an object produced by the application of the variable force
is represented by a graph shown in the figure. If the object undergoes a displacement from
to
the work done will be approximately equal to in J is
The relation between the displacement of an object produced by the application of the variable force
is represented by a graph shown in the figure. If the object undergoes a displacement from
to
the work done will be approximately equal to in J is
Work done = Area under curve and displacement axis = Area of trapezium As the area actually is not trapezium so work done will be more than |
When 15 is included in a list of natural numbers, their mean is increased by 2. When 1 included in this new list, the mean of the numbers in the new list is decreased by 1. How many numbers were there in the original list?
(a) 4 (b) 5 (c) 6 (d) 8
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