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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

A particle which is constrained to move along the x-axis, is subjected to a force in the same direction which varies with the distance x of the particle from the origin as F(x)= -kx+ax3 . Here k and a are positive constants. For x ≥ 0 , the functional from of the potential energy U(x) of the particle is

Answer:d

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PrevPreviousA uniform cube of side a and mass m rests on a rough horizontal table. A horizontal force F is applied normal to one of the faces at a point that is directly above the centre of the face, at a height 3a/4 above the base. The minimum value of F for which the cube begins to tilt about the edge is (assume that the cube does not slide)

NextAssertion : If two protons are brought near one another, the potential energy of the system will increase. Reason : The charge on the proton is .+1.6×10-19CNext

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