Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2015)
done JEE Main Paper (Held On 10 April 2015) Total Questions - 2
question_answer1) A block of mass m=10 kg rests on a horizontal table. The coefficient of friction between the block and the table is 0.05. When hit by a bullet of nails 50 g moving with speed r, that gets embedded in it, the block moves and comes to stop after moving a distance of 2 m on the table. If a freely falling object were to acquire speed \[\frac{\upsilon }{10}\] after being dropped from height H, then neglecting energy losses and taking \[g=10m{{s}^{-2}},\]the value of H is close to:
JEE Main Online Paper (Held On 10 April 2015)
question_answer2) A block of mass m = 0.1 kg is connected to a spring of unknown spring constant k. It is compressed to a distance x from its equilibrium position and released from rest. After approaching half the distance \[\left( \frac{x}{2} \right)\]from equilibrium position, it hits another block and comes to rest momentarily, while the other block moves with a velocity \[3m{{s}^{-1}}.\]The total initial energy of the spring is:
JEE Main Online Paper (Held On 10 April 2015)