A hanging mass of 1.53-kg hangs on a rope wrapped around a p…

A hanging mass of 1.53-kg hangs on a rope wrapped around a pulley of mass 7.07 kg and radius 66 cm. This pulley is frictionless in its axle and has the shape of a solid uniform disk. After the mass has been released, what is the acceleration of the falling mass? Two significant digits only.

You need to determine the density of an object. If you suspe…

You need to determine the density of an object. If you suspend it from a spring scale, the scale reads 28.4 N. If you then lower the object into a tub of water so that it is completely submerged, the scale reads 17.0 N. What is the density of the object? Two significant digits. (Hint: Recall tension in a string and the volume of displaced fluid for an object completely submerged) in our examples. Use: Density of water as 1000 kg/m3.