Laws of MotionHard
Question
A particle is resting on a smooth horizontal floor. At t = 0 , a horizontal force starts acting on it. Magnitude of the force increases with time according to law F = α . t , where a is a constant. For the figure shown which of the following statements is/are correct ?
Options
A.Curve 1 shows acceleration against time
B.Curve 2 shows velocity against time
C.Curve 2 shows velocity against acceleration
D.none of these
Solution
F = at
a =
t ....(i) straight line curve 1
dv =
tdt
v =
curve 2....(ii)
divide (ii) by
v =
→ Paacebole curve 2.
a =
t ....(i) straight line curve 1dv =
tdtv =
curve 2....(ii)divide (ii) by
v =
→ Paacebole curve 2.Create a free account to view solution
View Solution FreeMore Laws of Motion Questions
A pulley is attached to the ceiling of a lift moving upwards. Two particles are attached to the two ends of a string pas...If the force on a rocket moving with a velocity of 300 m/sec is 210 N, then the rate of combustion of the fuel, is :-...The moment of the force, F→=4i^+5j^-6k^ at (2, 0, –3), about the point (2, –2, –2), is given by:...A person is standing in elevater. In which situation he finds his weight less?...In the figure shown the velocity of lift is 2 m/s while string is winding on the motor shaft with velocity 2 m/s and blo...