Question

Q no. 4 with full explanation ​

Answer 1

Volume of water displaced = mass / density = 4/4000 = 0.001 m^3

so boyant force = v * density of water * g

= 0.001 * 1000 * 10 = 10 N

SO DOWNWARD FORCE = mg = 4 * 10 = 40 N

SO APPARENt WEIGHT =  40 - 10 = 30 N