Atwo-inch diameter craft ball is thrown vertically. this initial velocity of the ball is 2 ft/s a)-neglecting drag, draw a free body diagram and formulate a first order ode that governs the velocity of the ball. is the ode linear or non-linear? b)- drag force is known to be proportional to the velocity squared. draw a free body diagram and formulate a first order ode that governs the actual velocity of the ball. is the ode linear or non-linear?

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.