Answer:
Explanation:
submerged volume of pump = 40 x 12⁻³ ft³
density of oil = .9 x 62.4 lb ft⁻³ ( specific gravity x density of water )
mass of displaced oil = 40 x 12⁻³ x .9 x 62.4 lb
= 1.3 lb
buoyant force = 1.3 lb
weight of pump = 14.6 lb
extra force needed for balancing pump by spring
= 14.6 - 1.3
= 13.3 lb .
<h3><u>Answer;</u></h3>
= 2868 Newtons
<h3><u>Explanation;</u></h3>
Centripetal force is a force that acts on an object or a body in circular path and is directed towards the center of the circular path.
Centripetal force is given by the formula;
mv²/r ; where m is the mass of the body, r is the radius of the circular path and v is the velocity of a body;
mass = 65 kg, velocity = 15 m/s and r = 5.1 m
Therefore;
Centripetal force = (65 × 15²)/ 5.10
= 2867.65 Newtons
= 2868 N