What will be the speed of center of mass, if a solid sphere of radius 20 cm which rotates at 2 rps along a straight line?
2.51 m/s
2.55 m/s
2.22 m/s
2.50 m/s
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4m/s2. After 2 seconds, its speed will be :
(a) 8 m/s
(b) 12 m/s
(c) 16 m/s
(d) 28 m/s
A block hangs from a string wrapped on a disc of radius 20 cm free to rotate about its axis which is fixed in a horizontal position. If the angular speed of the disc is 10 rad/s at some instant, with what speed is the block going down at that instant?
A block hangs from a string wrapped on a disc of radius 20 cm, free to rotate about its axis, which is fixed in a horizontal position. If the angular speed of the disc is 10 rad/s at some instant, with what speed is the block going down at that instant?