Questions
The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is
detailed solution
Correct option is C
F = dpdt ⇒ dp = F.dt or ∫pipfdp = ∫F.dtChange in momentum = Area under the F versus t graph in the interval= (12×2×6)-(2×3)+(4×3)= 6-6+12 = 12 NSTalk to our academic expert!
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Statement I : The familiar equation mg = R for a body on a table is true only if the body is in equilibrium.
Statement II : The equality of mg and R has no connection with the third law.
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