Recent content by Lara Croft

Is it 0, because the cone is spinning with constant speed, so this means that the acceleration of it should be 0, because the speed doesn't change over time?

Thanks on your replies. I tried to solve this using law of conservation of energy. Addition of kinetical energy that cone has from rotating on the table (E_1) and from rotating around it's axis (E_2) is equal to work of friction. Can somebody please check my solution? Thanks...

Homework Statement I'm not from an English speaking country. I hope that you'll understend my question. Cone made of steel is rotating on the wooden desk. Radius of cone is 4 cm, height is 10 cm. Density of steel is 7,8*10^3 kg/m^3. Angular velocity of cone is 3.14 rad/s. Find the force of...