Determinar la dirección de la aceleración del centro de gravedad del eslabón mostrado. El cual tiene 10 pulgadas de largo, 4 lb, es perfectamente simétrico, en el punto P actúa una fuerza externa de 40 lb y su inercia de masa de su CG es de 0.08 lb-pulg-s2. Además, sus datos cinemáticos son: θ
2 = 25 grados,
ω
2 = 25 rad/seg,
α
2 = 25 rad/seg2.

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

What happens when you slowly pulled the carboard?

Ajoint produces movement when its angle decreases. which type of movement is it?