1. Calculate the weight of a watermelon with a mass of 2 kg on the earth (g = 9.80 m/s2) and on the moon (g = 1.63 m/s2). Use this example to describe the differences between mass and weight and how mass and weight are related.
2. Apply Newton’s second law to calculate the frictional force needed to hold a 0.02 kg pen in your fingers and keep it from falling. (g = 9.8 m/s2)

Weight of watermelon on earth and moon are 19.6 N and 3.26 N and Frictional force on pen needed is 0.196 NGiven:Mass of water melon = 2 kgGravitation force on earth = 9.8 m/s²Gravitation force on moon = 1.63 m/s²Mass of pen = 0.02 kgFind:Weight of watermelonFrictional force on penComputation:We know that;Weight is a type of forceSo,F = maWeight of watermelon on earth = (2)(9.8)Weight of watermelon on earth = 19.6 NWeight of watermelon on moon = (2)(1.63)Weight of watermelon on moon = 3.26 NFrictional force on pen = (0.02)(9.8)Frictional force on pen = 0.196 NLearn more:https://brainly.com/question/4230804?referrer=searchResults

Answer:Fg=mass x gravityFg is the same as weightso Fg=(1360kg)(9.8m/s^2) He weighs 13,328N or 1.3x10^4N if you use the proper significant digits