Marco is going on a grand vacation to visit the different Kalinga getaway/tourist spots. On his excitement, he forgot his 3kg back pack on top of the cabinet with a height of 2m so he rushed home to get it. As he reached the back pack, it accidentally fell on the floor. What is the gravitational force of back pack at rest on top of the cabinet? What is the kinetic potential energy of the back pack 2s after falling? Compute for the total mechanical energy of the back pack.
give me proper answer please.