U2-4) A goal with the mass of 5000 kg is connected with a friction-free joint. The width of the goal (b) is 10 m. The length L is 25 m. How high can the height h of the of water when the maximum permitted joint angle is 30°. The density of water is 1000 kg/m3 (Exam question in 2016). ✓ Wasser L h Gelenk 30°
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- 1. A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a mass of 1000 kg. The force required on plunger is nearly equal toTrina is a gym goer with a leg length of 84 cm. Suppose that she is in the gym doing straight leg raising with 10 Ib weights. Compute for the force that the muscle should exert in order to (1) maintain it in the position and (2) lift the weight up given that the distance of the effort (muscle) from the joint is 54 cm, distance of the weight is 80 cm, and the COM is 45 cm from the joint. Questions: 1. Draw the free body diagram for straight leg raise. 2. What is the muscle responsible for straight leg raise? 3. What is the fulcrum? 4. What is the effort? 5. What is the resistance?Are you as strong as a horse? Purpose: To understand the concept of work and power and to calculate the power generated by yourself or a friend. Materials: A tape measure, stairs, and a stopwatch, cell phone, or wristwatch. Key Physics Concept: Power is the rate of doing work. Power can be calculated by dividing the work done by the time it takes to do the work; in this case we will do work against gravity on a stair case (you may add your power in doing pushups to test your arm power). Can you guess what your peak horsepower is? You may do the stairs one at at time or multiple stairs at a a time; whatever is most safe and efficient for you. Procedure: Observations: Analysis: Conclusions: Application: 1. Will your hp change if you performed the activity for a longer duration (for example, climbed the CN tower staircase)? In what way? Explain. 2. Research the horsepower generated by a car. How does the average person's peak power rating compare to it? How many average people would it…
- A 12 kN sphere is attached to a 4 kN sphere by a cable. Both spheres have the same diameter of 1.2 m and the weight and volume of the cable is negligible. If the spheres are thrown in water, calculate the following:a. The draft of the 4 kN sphere in meter.b. The tension in the cable in kilonewton.c. The exposed volume of the 4 kN sphere in cubic meter.d. Percentage of submerged volume of 2 spheres.Trina is a gym goer with a leg length of 84 cm. Suppose that she is in the gym doing straight legraising with 10 lb weights. Compute for the force that the muscle should exert in order to (1) maintain it in the position and(2) lift the weight up given that the distance of the effort (muscle) from the joint is 54 cm,distance of the weight is 80 cm, and the COM is 45 cm from the joint. ANSWER THE QUESTION: 1.) Assuming that the leg moves at 0. 9 seconds, compute for the angular velocity. GIVEN: Leg length = 84 cm = 0.84 m Distance of the muscle from the joint = 54 cm = 0.54 m Distance of the weight = 80 cm = 0.80 m Distance of the COM from the joint = 45 cm = 0.45 m Mass = 10 lb = 4.535 kg Linear displacement x = 38.971 cm Or x = 0.389 msolve all parts
- 2: Find the weight of the truck that could be drawn by a construction equipment on wheels, if rolling resistance of the road is (45 kg/ton) and the grade is (8%) upward with speed of (10 mph); If you know that the site (750m above sea level, temperature is 12° C, and the atmospheric pressure is 740 mm Hg). Equipment specifications: weight (20 tons), engine (four-cycle with 350 hp) at sea level, and efficiency of 82.5%?TOPICS: CALCULATION OF CENTER OF GRAVITY Given: A bar ( from point A to B )of 4 meters in length and weighting 20 kilos where its center of gravity is located in the middle of the bar which is calculated 2 meters away from point A. You are to load 10 kilos of weight 1 meter away from point A. Requirements: 1. What is the new Center of gravity when additional 10 kilos are loaded on the bar 2. How much distance that shifted from old Center of gravity to new Center of Gravity 3. Justify the direction of the new Center of Gravity that is showing you?A 50 kg fisherman sits at the center of the boat rented in a private resort, which has a uniform width and a weight per linear foot of32 lb/ft, that will be used for island hoping in the area. The boat is 3 m long. Assume that the water exerts a uniform distributed load upward on the bottom of the boat. a) What is the applied load (lb) applied to the boat due to the weight of the fisherman? Round up to the next whole value. b) Using the applied load at Item a, what is the maximum shear force (lb) exerted on the boat?
- 1. A moving company rigs a pulley system to lift a piano to a fourth floor balcony 44 feet from the ground. The pulley system has 7 ropes with one pulling down and 6 supporting the load and the piano weighs 1200lbs. What is the Ideal MA of this system? Assuming 88% efficiency what is the True MA of this system? True MA, how much force would be required to lift the plano? the piano to the balcony? Using the How much rope would be pulled to liftHomework 6- Attempt 1 roblem 9.122 The concrete "gravity" dam is held in place by its own weight (Figure 1). The density of concrete is Pc = 2.5 Mg/m³, and water has a density of P = 1.0 Mg/m³. Suppose that a = 1.5 m h = 7.5 m. igure a A -d-a- -d- h Part A 6 of 10 > ■Review Determine the smallest dimension & that will prevent the dam from overturning about its end A. Express your answer to three significant figures and include the appropriate units. d= 3.77 A m Submit Previous Answers Request Answer ? Incorrect; Try Again; 17 attempts remainingA hydraulic jack is used to raise a 10KN car. A force of 400N applied on a 25mm diameter jack plunger. What diameter of jack in mm is required to raise the car?