The conditions that the weight of a given assembly is very nearly independent of the type of the system (MB, BE, and FD) are a. ns >> 1 b. gs >> 1 C. gs >> ns >> 1 d. gs = ns
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- Replace the loading system by an equivalent resultant force and a couple moment acting at point OO. Assume F1= 150 N , F2= 210 N and Mc= 85 N⋅m. .A high jumper approaches the bar at 6.5 m/s horizontally. She experiences a vertical reaction force of 1555 N for a period of 0.28 s. If the high jumper weighs 698 N what is: (Remember projectile motion concepts) and draw an free body diagram. a) her resultant velocity immediately after leaving the ground? b) her angle of take-off c)What is the horizontal component of the velocity at c.2) the instant of release? c.3) the highest point? c.4) 0.33 seconds after release? d) What is the vertical component of the velocity at d.1) the instant of release? d.2) the highest point? d.3) 0.33 seconds after release? e) What is the acceleration? e.2) in the vertical direction? e.3) in the horizontal direction? please answer all parts, a-e.a 45kg gymnast wedges himself between two closely spaced vertical walls by pressing his hands and feet against the walls. What is the magnitude of the friction force on each hand and foot? Assume they are all equal. Express your answer with the appropriate units.
- Find the tension in each string in the figure below, where ?1 = 42.5°, ?2 = 18.5°, and w = 29.0 N. T1= T2= T3= 29.0 NA block of mass 5kg is attached to the ceiling via two strings. The strings make angles α1=42o and α2 = 36o with the ceiling as shown in the figure. How does the tensions in the string compare? A. T1 > T2 B. T1 = T2 C. T1 < T2 D. Impossible to tell .According to a simplified model of a mammalian heart, at each pulse, approximately 20 g of blood is accelerated from 0.26 m/s to 0.35 m/s during a period of 0.10 s. What is the magnitude of the force exerted by the heart muscle? Express your answer to two significant figures and include the appropriate units. F= ______ units I got 0.02N but it is wrong.
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- Given a 2-D force system with geometry as shown. Find the magnitude of the equivalent resultant force (N) if P = 305 N , Q = 577 N, and T = 403 N .Express all answers in significant figures and scientific notation. The elastic limit of Al is 1.8 X 10^8 Pa. Find the minimum radius (meter) of an Al wire that could support a 10.0 kg mass without surpassing its elastic limitA student is sliding down a rope, using friction to keep her moving at a constant speed. How do you choose the system so that it is isolated?