1

IIT-JEE 1998 Screening

MCQ (More than One Correct Answer)

+2

-0.5

A force $$F = - K\left( {y\widehat i + x\widehat j} \right)$$ (where K is a positive constant) acts on a particle moving in the xy plane. Starting from the origin, the particle is taken along the positive x axis to the point $$\left( {a,0} \right)$$, and then parallel to the y axis to the point $$\left( {a,a} \right)$$. The total work done by the force F on the particle is

2

IIT-JEE 1998 Screening

MCQ (More than One Correct Answer)

+2

-0.5

A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the center. At a certain instant of time, the stone is at its lowest position, and has a speed u. The magnitude of the change in its velocity as it reaches a position where the string is horizontal is

3

IIT-JEE 1987

MCQ (More than One Correct Answer)

+2

-0.5

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that :

4

IIT-JEE 1985

MCQ (More than One Correct Answer)

+2

-0.5

A uniform chain of length L and mass M is lying on a smooth table and one third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part on to the table is

Questions Asked from Work Power & Energy (MCQ (Multiple Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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