The forearm of length Larm = 35.2 cm shown in the figure is positioned at an angle with respect to the upper arm, and a 5.05-kg ball is held in the hand. The total mass motal of the forearm and hand is 2.75 kg, and their center of mass is located at Le = 15.0 cm from the elbow. The biceps muscle attaches to the forearm at a distance Lbiceps = 4.5 cm from the elbow. What is the magnitude of the force Friceps that the biceps muscle exerts on the forearm for 0 = 27"? Foiceps 451.9 Incorrect N IY
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A: Given,Larm=36 cmm=5.35 kgmtotal=2.90 kgLcm=14.2 cmLbiceps =4 cmθ=43°θ'=90-43=47°
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- A 500.0 g bird is flyinghorizontally at 2.25 m/s, notpaying much attention, when it suddenlyflies into a stationary verticalbar, hitting it 25.0 cm below the top(Fig. ). The bar is uniform,0.750 m long, has a mass of 1.50 kg,and is hinged at its base. The collisionstuns the bird so that it justdrops to the ground afterward (butsoon recovers to fly happily away).What is the angular velocity of the bar (a) just after it is hit by the birdand (b) just as it reaches the ground?⦁ Imagine that you hold a 6.0kg lead ball in your hand with your arm bent. The ball is 0.35m from the elbow joint. The biceps muscle attaches to the forearm 0.050m from the elbow joint and exerts a force on the forearm that allows it to support the ball. The center of mass of the 12N forearm is 0.16m from the elbow joint. Estimate the magnitude of⦁ The force that the biceps muscle exerts on the forearm ⦁ The force that the upper arm exerts on the forearm at the elbowPlease Asap
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