The palomar telescope’s 5-m mirror weighs 14.5 tons. if a 10-m mirror were constructed of the same thickness as palomar’s (only bigger), how much would it weigh?

58 tons

Explanation:

Diameter of Palomar telescope mirror = 5 m

Radius of Palomar telescope mirror = 2.5 m

h = Thickness of mirror

Volume of mirror of 5 m diameter = πr²h = π2.5²h

Volume of mirror of 10 m diameter = π5²h

Mass of second mirror

Assuming the material of the mirrors are same the density will be same.

∴ Weight of the mirror if it were 10 m diameter is 58 tons

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

correct it is c.) b b