A physics student is getting some physical education, specifically doing a pushup, so he’s supported by his feet and by his hands directly below his shoulders. At the bottom of the pushup, when his body is level, his center of mass is 39 cm from his shoulders and 99 cm from his feet, and his mass is 75 kg. Find the force on his hands and the force on his feet.
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A physics student is getting some physical education, specifically doing a pushup, so
he’s supported by his feet and by his hands directly below his shoulders. At the bottom
of the pushup, when his body is level, his center of mass is 39 cm from his shoulders and
99 cm from his feet, and his mass is 75 kg. Find the force on his hands and the force on
his feet.
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- When you lift an object by moving only your forearm, the main lifting muscle in your arm is the biceps. Suppose the mass of a forearm with hand is 1.80 kg. If the biceps is connected to the forearm a distance of 2.50 cm from the elbow, how much force must the biceps exert to hold a 44.5 N (about 10 lbs) ball at the end of the forearm at distance of 35.0 cm from the elbow, with the forearm parallel to the floor, in Newtons? Use g = 10.0 m/s². Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. k driceps -Biceps -drall XAn architecture student working at a drafting table requires some muscle action in order to support her head. As shown in the figure, three forces act on her head. If the force provided by muscles is FM = 70 N and the weight of her head is W = 31 N, determine the magnitude and direction of the force provided by the upper vertebrae Fy to hold her head stationary. Assume that this force acts along a line through the center of mass of her head as do the weight and muscle force. (Assume the +x-axis to be to the right.) magnitude N direction measured clockwise from the -x-axis CG 40 13A uniform plate of height 0.970 m is cut in the form of a parabolic section. | y IV The lower boundary of the plate is defined by: y =0.600x². Find the distance from the rounded tip of the plate to the center of mass. Submit Answer Tries 0/12
- A rod of length 2.85 meters is hanging from the ceiling using two strings at each end. The rod is horizontal and the tension force on one of strings is 2.14 times the tension on the other one. Deternine the distance of the center of mass of the rod from the string with higher tension. Enter numerical value of the length in unit of meters.A person with 100kg mass is standing erect on the tip of both feet. Find the contact force Cexerted by the bones -tibia and fibula- on the ankle joint, and the muscle force Fon the tendon of calcaneus at 37° with the horizontal. In this posture, the distance between the application points of Cand F in a longitudinal cut is 5 cm; the distance between the application points of the Cand the normal force is 6 cm. F 37 5 cm 6 cmWhen you lift an object by moving only your forearm, the main lifting muscle in your arm is the biceps. Suppose the mass of a forearm with hand is 1.60 kg. If the biceps is connected to the forearm a distance of 2.1 cm from the elbow, how much force must the biceps exert to hold a 37 N ball at the end of the forearm at distance of 36.0 cm from the elbow, with the forearm parallel to the floor, in Newtons? Use g = 10.0 m/s2.
- Please answer it within 30 minutes. I will upvote!When you lift an object by moving only your forearm, the main lifting muscle in your arm is the biceps. Suppose the mass of a forearm with hand is 1.60 kg. If the biceps is connected to the forearm a distance of 2.2 cm from the elbow, how much force must the biceps exert to hold a 39 N ball at the end of the forearm at distance of 36.0 cm from the elbow, with the forearm parallel to the floor, in Newtons? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.You are working in an ice skating rink and have been asked to hang a new banner on the wall. Your friend is helping you so that the ladder does not collapse by exerting a force F_AL at an angle ϕ relative to the horizontal. The ladder has a length L and makes an angle of θ with respect to the vertical wall. You have a mass, m_Y, and are a horizontal distance x from the wall. The ladder has a mass of m_L. Because the wall is slick, and the ice on the floor is slick, the frictional forces acting on the ladder are negligible. Find a formula for the magnitude of the force that your friend must exert to keep the ladder from falling, in terms of the following variables: x,L,m_Y,m_L,θ,ϕ. Then use the following values to get a number for the magnitude of F_AL. θ = 30.3 degrees ϕ = 23.028 degrees x = 1.491 meters L = 7.1 meters m_Y = 86.0 kg m_L = 42.14 kg Find the magnitudes of: F_AL, normal force of the wall on the ladder (N_WL), and normal force of the floor on the ladder (N_FL).
- ⦁ 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 elbowthis is solution true or falseAsap plzzzzz