Question
Question: The force-time (F – t) curve of a particle executing linear motion is as shown in the figure. The mo...
The force-time (F – t) curve of a particle executing linear motion is as shown in the figure. The momentum acquired by the particle in time interval from zero to 8 second will be
A
– 2 N-s
B
- 4 N-s
C
6 N-s
D
Zero
Answer
Zero
Explanation
Solution
Momentum acquired by the particle is numerically equal to the area enclosed between the F-t curve and time Axis. For the given diagram area in a upper half is positive and in lower half is negative (and equal to the upper half). So net area is zero. Hence the momentum acquired by the particle will be zero.