Rankers Physics

Work Done by Constant and Variable Forces: Practice Problem & Solution

A particle of mass 0.1 kg is subjected to a force which varies with distance as shown in figure. If it starts its journey from rest at x = 0, Work Done from x=0 to x = 12 m is: Work Done by Constant and Variable Forces diagram: A particle of mass 0.1 kg is subjected
60 J
80 J
100 J
120 J

Solution Explained:

To solve this problem, we apply the core principles of Work Done by Constant and Variable Forces. Understanding the underlying formula is key to arriving at the correct answer below:

Area bounded by force-distance (x) graph represents work done so, 

Work= ½(12+4)×10= 80 J

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