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Online Practice: Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power for JEE

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Sharpen your physics preparation with interactive online practice for Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power. Goodmarks offers 2+ JEE-style MCQs mapped to the official syllabus, each with detailed explanations so you learn from every attempt.

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Q1PhysicsUnit 4: Work, Energy and Power
A force acts on a 3g3 g particle in such a way that position of the particle as a function of time is given by x=3t−\boldsymbol{x}=\mathbf{3} \boldsymbol{t}- 4t2+t3,4 t^{2}+t^{3}, where xx is in metre and tt is in sec. The work done during the first 4s4 s is
Q2PhysicsUnit 4: Work, Energy and Power
Assertion A load when lifted vertically up requires greater effort than to roll the same load up the ramp. Reason The work done in lifting the load vertically up is less.

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