A dumbbell-shaped object is composed by two equal masses, mm , connected by a rod of negligible mass and length rr . If I1I1 is the moment of inertia of this object with respect to an axis passing through the center of the rod and perpendicular to it and I2I2 is the moment of inertia with respect to an axis passing through one of the masses, it follows that

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

How to calculate voltage drop in a series circuit