Question

Displacement-time graph of an object of mass 2 kg is shown in figure. The force required to
move the object for first four seconds is
12
Displacement
In (meter)
8
4,2
4
6
Time in seconds
(A) Zero
(C) IN
(B) 4 N
(D) None of these​

Answer 1

Answer:

ANSWER F=0

Explanation:

Explanation:

Force = mass × acceleration

Acceleration is change in velocity per unit time:

a=Δ∨/Δt

From the displacement time graph, we come to know that velocity is constant having magnitude:

v=\frac{6m-0m}{3s-0s}=2m/sv=

3s−0s

6m−0m

=2m/s

⇒Δ∨=0

⇒a=0

⇒F=m×a=0

Therefore, the force required to move the object in first three minutes is 0.