1
JEE Main 2020 (Online) 3rd September Evening Slot
Numerical
+4
-0
A block starts moving up an inclined plane of inclination 30o with an initial velocity of v0
. It comes
back to its initial position with velocity $${{{v_0}} \over 2}$$. The value of the coefficient of kinetic friction between
the block and the inclined plane is close to $${I \over {1000}}$$. The nearest integer to I is____.
Your input ____
2
JEE Main 2020 (Online) 3rd September Morning Slot
Numerical
+4
-0
A cricket ball of mass 0.15 kg is thrown
vertically up by a bowling machine so that it
rises to a maximum height of 20 m after leaving
the machine. If the part pushing the ball applies
a constant force F on the ball and moves
horizontally a distance of 0.2 m while launching
the ball, the value of F (in N) is (g = 10 ms–2)
____.
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3
JEE Main 2020 (Online) 2nd September Morning Slot
Numerical
+4
-0
![JEE Main 2020 (Online) 2nd September Morning Slot Physics - Work Power & Energy Question 81 English](https://imagex.cdn.examgoal.net/jgy2xukev3itzi/3c68ea76-ce0d-480f-99a7-2844c5a8dec0/eede96e0-f272-11ea-8293-3b6cc591631c/file-jgy2xukev3itzj-284w.png)
A small block starts slipping down from a point B on an inclined plane AB, which is making an angle $$\theta $$ with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction $$\mu $$. It is found that the block comes to rest as it reaches the bottom (point A) of the inclined plane. If BC = 2AC, the coefficient of friction is given by $$\mu $$ = ktan $$\theta $$ . The value of k is _________.
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4
JEE Main 2020 (Online) 7th January Morning Slot
Numerical
+4
-0
A particle (m = 1 kg) slides down a frictionless track (AOC) starting from rest at a point A (height 2 m). After reaching C, the particle continues to move freely in air as a projectile. When it reaching its highest point P (height 1 m), the kinetic energy of the particle (in )) is :
(Figure drawn is schematic and not to scale; take g = 10 ms-2)![JEE Main 2020 (Online) 7th January Morning Slot Physics - Work Power & Energy Question 84 English](https://imagex.cdn.examgoal.net/7k9k2k5duzy9r/d2bb9b08-95ec-47aa-9765-d800d8d0d521/53527cf0-36ca-11ea-92dd-4b9c3519996f/file-7k9k2k5duzy9s-357w.jpg)
(Figure drawn is schematic and not to scale; take g = 10 ms-2)
![JEE Main 2020 (Online) 7th January Morning Slot Physics - Work Power & Energy Question 84 English](https://imagex.cdn.examgoal.net/7k9k2k5duzy9r/d2bb9b08-95ec-47aa-9765-d800d8d0d521/53527cf0-36ca-11ea-92dd-4b9c3519996f/file-7k9k2k5duzy9s-357w.jpg)
Your input ____
Questions Asked from Work Power & Energy (Numerical)
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