Question

A force-time graph for a linear motion is shown in figure. The linear momentum gained between oand 6 second is

• A. 2 Ns
• B. 4 Ns
• C. 6 Ns
• D. Zero

Answer 1

Answer: (B)

4 Ns

Area under the curve of force-time graph gives the change in momentum of the body during that time interval.

Area under the curve Area =$(2\times 2)-(2\times 1)+(1\times 2)=4$

Thus momentum gained between 0 to 6 seconds $\Delta P=4Ns$