What determines ghe refractive index when the light falls from the 1st to 2nd environemnt

Asmall blob of putty of mass m falls from the ceiling and lands on the outer rim of a turntable of radius r and moment of inertia i0 that is rotating freely with angular speed ω0 about its vertical fixed-symmetry axis. (use any variable or symbol stated above as necessary.)

When an object is heated it contracts. a. true b. false

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)