Question

A block of mass m is placed on a smooth turntable at a distance of 20 cm from the centre. A string is

tied to the block and its other end passed through a hole in the centre of the table. A second block of mass m

is suspended from the free end of the string. At what angular speed should the turntable rotate so that the

block placed on it should remain at rest on its surface?​

Answer 1

Answer:

tension max=mg from the hanging mass

centripetla force=mw^2*r

tensionmax=mr*w^2

mg=mr*w^2

w=sqrt(g/r) radians per second.

A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant

two blocks are connected by a string. the smooth incline surface makes an angle of 42 degrees with the horizontal, andthe block on the incline has a mass of 6.7 kg. find the mass of the hanging block that will cause the system to