Questions
A particle of mass 2kg initially at rest. A force acts on it whose magnitude changes with time. The force-time graph is shown below. The velocity of the particle at t=10 sec is
detailed solution
Correct option is C
Area of the force time graph is impulse i.e., change in momentum.122×10+2×10+10+202+12×4×20mv−u = 10+20+30+402×v = 100v =50m/sTalk 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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