Question

find the expression for uniform speed in circular motion. if moon revolves around the earth in 2 days and radius of revolution is 1.75 × 10^6 km then find the speed of revolution​

Answer 1

speed=distance/time t=48 hrs

area=2πr

2x22/7x1.75x10^6=11x10^6

speed=11x10^6/48 = 2.3x10^5 km/hr