A spirit level is placed at the edge of a turn table along its radius . The bubble will be

A block of mass m is kept on the edge of a horizontal turn table of radius R which is rotating with constant angular verticle omega (along with the block ) about its axis . If coefficient of friction is mu , find the friction force between block and table.

A block of mass m is kept on the edge of a horizontal turn table of radius R which is rotating with constant angular verticle omega (along with the block ) about its axis . If coefficient of friction is mu , find the friction force between block and table.

A cube of edge 2 cm and mass 10 g is placed on the surface of a table. What is the pressure exerted by the cube on the table?

A soap bubble is charged to a potential of 16V. Its radius is then doubled. The potential of the bubble now will be

At what height should a lamp be hung above the centre of a round table of radius R to otain the maximum illumination at its edges?