A rotary engine is running at 7,200 rev/min when it runs out of fuel, causing the engine to decelerate at a constant rate. If the angular speed is 3,600 rev/min after 2,900 revolutions, determine the total time it takes for the engine to stop (in seconds).

Determine the velocity of rod R for 0 T/2 rad in the cam C if the cam rotates with a constant angular velocity w = 10 rad/s . The pin connection at O does not cause an interference with the motion of A on C. Enter the velocity of R in m/s in the box below. Assume positive to the left, as shown in the figure. ri = 1 m, r2 = 0.15 m. Enter the answer in m/s in the box below. C www R

The center O of the disk has the velocity and acceleration shown in the figure. If the disk rolls without slipping on the horizontal surface, determine the velocity of A and the acceleration of B for the instant represented. Assume a = 6.5 m/s², v = 2.3 m/s, b = 0.4 m, 0 = 40°. Answers: VA = i+ i j) m/s i + i j) m/s² ag = i (i

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If the operator initially pushes the pedals at 20 rev/min and then initiates an angular acceleration of 6 rev/min2, determine the angular speed of the flywheel F (in rev/min) after the pedal has rotated 2 revolutions. Note that the pedal arm is connected to the chain plate A, which, when turning, drives the tethered pulley B through a coupling gear D. The belt wraps around the tethered pulley and then drives pulley E and the fixed flywheel. . B D "A = 125 mm "D = 20 mm "B = 175 mm "E = 30 mm F

In the figure, Pulley A, rotating at 20 rad/s, controls the motion of Pulley B. The motor of pulley A is cut off, and friction eventually brings the pulleys to a stop with an angular acceleration of α = -2.5t rad/s2. If there is no slippage, determine: a. The angular velocity of B with respect to time b. The angular displacement of B during the deceleration c. The acceleration of point C with respect to time

12. The gear A on the drive shaft of the outboard motor has a radius r = 0.5 in. and the meshed pinion gear B on the propeller shaft has a radius r = 1.2 in. . (a) Determine the angular velocity of the propeller in t = 1.5 s, if the drive shaft rotates with an angular acceleration ,a = (400t³) rad/s², where t is in seconds. The propeller is originally at rest and the motor frame does not move. (b) Determine the magnitude of the velocity and acceleration of point P located on the tip of the propeller at the instant. t = 0.75 s 2.20 in.