1
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
Two bodies, a ring and a solid cylinder of same material are rolling down without slipping an inclined plane. The radii of the bodies are same. The ratio of velocity of the centre of mass at the bottom of the inclined plane of the ring to that of the cylinder is $${{\sqrt x } \over 2}$$. Then, the value of x is _____________.
2
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
A body rotating with an angular speed of 600 rpm is uniformly accelerated to 1800 rpm in 10 sec. The number of rotations made in the process is ___________.
3
JEE Main 2021 (Online) 20th July Morning Shift
Numerical
+4
-1
A circular disc reaches from top to bottom of an inclined plane of length 'L'. When it slips down the plane, it makes time 't1'. When it rolls down the plane, it takes time t2. The value of $${{{t_2}} \over {{t_1}}}$$ is $$\sqrt {{3 \over x}}$$. The value of x will be _______________.
4
JEE Main 2021 (Online) 17th March Morning Shift
Numerical
+4
-1
The angular speed of truck wheel is increased from 900 rpm to 2460 rpm in 26 seconds. The number of revolutions by the truck engine during this time is _____________. (Assuming the acceleration to be uniform).