Calcular el valor de la fuerza F, si el momento de la fuerza aplicada al balón del pin de enganche de un trailer sobre el punto base A es de 10,000 lb-in. En donde el valor del ángulo a de la figura vale 15°. F αξ 5 in. 4 in. B T 6 in.

Cycling The Campagnolo Hyperon Ultra Two carbon wheel, which has a diameter of 700 millimeters, has 22 spokes evenly distributed around the rim of the wheel. What is the length of the rim subtended by adjacent pairs of spokes (Figure 15)?

From the veranda of a beachfront hotel, Manny is searching the seascape through his binoculars. A ship suddenly appears on the horizon. If Manny is 80ft above the earth, how far is the ship out at sea? HINT: See Exercise 27 and note that 1mi=5280ft. An airplane reaches an altitude of 3mi above the earth. Assuming a clear day and that a passenger has binoculars, how far can the passengers see? HINT: The radius of the earth is approximately 4000 mi.

Which lines or line segments or rays must be drawn or constructed in a triangle to locate its a orthocenter? b centroid?