A low-mass rod of length 0.30 m has a metal ball of mass 1.8 kg at each end. The center of the rod is located at the origin, and the rod rotates in the yz plane about its center. The rod rotates clockwise around its axis when viewed from a point on the +x axis, looking toward the origin. The rod makes one complete rotation every 0.6 s. What is the moment of inertia of the object (rod plus two balls)?

It's because 3 if it was 10 it wouldn't look right do it goes up to 4d

Attach the free body diagram and i will you answer the question.! : d

Answer(b) both involve the use of levers;

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.