1

JEE Advanced 2013 Paper 1 Offline

Numerical

+4

-0

A particle of mass 0.2 kg is moving in one dimension under a force that delivers a constant power 0.5 W to
the particle. If the initial speed (in m/s) of the particle is zero, the speed (in m/s) after 5 s is

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2

JEE Advanced 2013 Paper 1 Offline

Numerical

+4

-0

A bob of mass m, suspended by a string of length l

_{1}is given a minimum velocity required to complete a full circle in the vertical plane. At the highest point, it collides elastically with another bob of mass m suspended by a string of length l_{2}, which is initially at rest. Both the strings are mass-less and inextensible. If the second bob, after collision acquires the minimum speed required to complete a full circle in the vertical plane, the ratio $${{{l_1}} \over {{l_2}}}$$ isYour input ____

3

IIT-JEE 2011 Paper 2 Offline

Numerical

+4

-0

A block of mass 0.18 kg is attached to a spring of force-constant 2 N/m. The coefficient of friction between the block and the floor is 0.1. Initially the block is at rest and the spring is un-stretched. An impulse is given to the block as shown in the figure. The block slides a distance of 0.06 m and comes to rest for the first time. The initial velocity of the block in m/s is V = N/10. Then N is

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4

IIT-JEE 2009 Paper 2 Offline

Numerical

+3

-1

A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 0.36 kg and 0.72 kg. Taking g = 10 m/s^{2}, find the work done (in joules) by the string on the block of mass 0.36 kg during the first second after the system is released from rest.

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Questions Asked from Work Power & Energy (Numerical)

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