Question

Momentum-time graph of an object moving along a straight line is as shown in figure. If (P2 – P1) < P1 and (t2 – t1) = t1 < (t3 – t2) then at which points among A, B and C the magnitude of force experienced by the object is maximum and minimum respectively.

• A. A, B
• B. A, C
• C. B, C
• D. B, A

Answer 1

Answer: (B)

A, C

Answer 2

$F_A=\frac{P_1}{t_1}$
$F_B=\frac{P_2-P_1}{t_2-t_1}$
$F_C=\frac{P_2-P_1}{t_3-t_2}$
Therefore the maximum force is at A and minimum force is at C.

So, the correct answer is (B) : A, C