In lab you find that a 1-kg rocksuspended above water wights 10 N. when the rock issuspended beneath the surface of the water , the scale reads8N.
a. what is the buoyant force on the rock?
b. if the container of water wights 10 N on the weightingscale, what is the scale reading when the rock suspending beneaththe surface of the water?
c. what is the scale reading when the rock is released andrest at the bottom of the container?