Work, Power and EnergyHard
Question
Force F on a particle moving in a straight line varies with distance d as shown in figure.The work done on the particle during its displacement of 12 m is
Options
A.18 J
B.21 J
C.26 J
D.13 J
Solution
Work done = Area under (F-d) graph
= Area of rectangle ABCD + Area of triangle DCE
= 2 × (7 - 3) + 1/2 × 2 × (12 - 7) = 8+5 = 13 J
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
Energy conservation law says that :-...If the kinetic energy of the body becomes four time of its initial of its value, then the the new momentum will...A disc of mass 1·0 kg kept floating horizontally in air by firing bullets of mass 0·05 kg each vertically at it, at the ...For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displace...An ideal heat engine working between temperature T1 and T2 has an efficiency η, the new effciency if both the sourc...