2-1C What is the difference between the macroscopic and microscopic forms of energy?

Calculate mobility of the linkage Copyright c The McGraw-Hill Companies, Inc. Permission required for reproduction or display L =J1 =_______ ,J2 =______,M=_______.

2-21C When is the energy crossing the boundaries of a closed system heat and when is it work?

3. Gear power. If torque is in in-lbf and speed is in rpm, then horsepower is H = Tn/63025. What is the output power of the gear train? What assumptions are required to get that result?

12-17. Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s?. It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes,he decelerates at 15 ft/s. Determine the minimum distance d be tween the cars so as to avoid a collision.

2. Beanie Campbell is performing an "Iron Cross" hold on still rings as shown. The gymnast has a mass of 70 kg, and each of his arms is 0.7 m long (from the shoulder to hand). While having his arms parallel to the ground, he mainly uses both his latissimus dorsi and deltoid muscle to support himself. The latissimus dorsi attaches 8 cm from the shoulder at an angle of 30 degrees, and the deltoid attaches 9 cm from the shoulder. а)Find the tension in the rope. b) Find the force in Beanie's left latissimus dorsi and shoulder joint.

Problem 7. A car (drawn as a solid box) initially at rest slides down a steep hillside and then falls off a cliff. On the hillside (which can be treated as one-dimensional motion since it is a straight line), assume that the car has an acceleration whose magnitude is 4 m/s?. Once it leaves the cliff,the car is certainly undergoing projectile motion and is subject only to gravity. (a) Determine the distance it lands from the cliff R. Use D = 50 m, 0 = 30° and H = 100 m. (b) Graph horizontal position, vertical position, horizontal velocity, vertical velocity, horizontal acceleration and vertical acceleration as a function of time for the time period when it is in projectile motion. You should have the time axes for these graphs lined up.

Question 2: A student of weight 667 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force Fy on the student from the seat is 556 N. (2) Does the student feel "light" or "heavy" there? (b) What is the magnitude of Fy at the lowest point? If the wheel's speed is doubled, what is the magnitude Fy at the (c) highest and (d) lowest point?

A7.7. VELOCITY ANALYSIS for a ROLLING FIVE-BAR MECHANISM. A five-bar mechanismconsists of two wheels pinned to the ground, with their centers separated by 75 mm. Rigidlinks (4 & 5) are connected to each wheel with revolute joints, as depicted below. Theselinks are themselves connected by another revolute joint, labeled P. Use instant centers to calculate wg. Find the magnitude and direction of the absolutevelocity of point P. Use instant centers to calculate wg. Find the magnitude and direction of the absolutevelocity of point P. W2 = 100 rpm clockwise

A7.6. VELOCITY ANALYSIS. For the single-degree-of-freedom mechanism shown below, findthe velocity of the slider, Vs. Report the direction and magnitude. Use instant centers andAVRT. The mechanism is drawn at 1:1 scale. There is sliding contact between link 3 and link5. w2 = 1 rad/s cW az = 0