When you carry a heavy load with one arm, why do you tend to hold your free arm away from your body?

Q: You are on a teeter-totter with a young girl. Your mass is 105 kg and the girl's mass is 25 kg. The…

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Q: A taho vendor has to carry his wares on a 1.50 – m uniform pole. A 10-kg load is suspended on one…

A: Given data: Length of the uniform pole, L=1.5 m Mass at the one end of the pole, m1=10 kg Mass at…

Q: When a catcher in a baseball game catches a fast ball, he does not hold his arms rigid, but relaxes…

A: Given:-  When a catcher in a baseball game catches a fastball, he does not hold his arms rigid but…

Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: An individual leans forwards to pick up a box of 100 N. The weight of his upper body has a magnitude…

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Q: A fireman at the scene of a fire is holding a heavy hose out of which water is gushing. To keep his…

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Q: Why do you tend to lean backward when carrying a heavyload in your arms?

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Q: A load of 50 gm is placed at 20cm on a meter stick supported at the center. Where will a 70 gm load…

A: Given data:  Mass (m1) = 55 gm placed at x1 = 20 cm Meter stick supported at center  Mass (m2) = 70…

Q: В A cook holds a 1.72-kg carton of milk at arm's length (see the figure below). What force Fa must…

A: Consider a carton of milk of mass m(1.72 kg) and it is placed at the distance l from the joint(axis…

Q: Milk 75.0° B. -25.0 cm- 8.00 cm

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Q: Why spring balance should be hold horizontally?

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Q: Achilles tendon- - Tibia Ankle joint K4.6*-12.5 ст ст

A: Given,Mass of the person, m = 75 kghis tendon is, 25 cm = 0.25 m longcross sectional area, A = 78…

Q: -aquarium activity- large hollow ball in water- How did the hand force required hold a ball down…

A: Answer

Q: A locomotive of 90,000 kg is one third of the way across a bridge 90 m long. The bridge consists of…

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Q: Why does your hair stand up when you go down a slide?

A: The hair stand up on going down the slide because of static electricity. On going down the slide,…

Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: The leg in the image below is in a cast (obviously). The cast and leg together have a mass of 18 kg…

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Q: Why is it easier to carry same amount of water in two buckets, one in each hand, than in a single…

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Q: You are holding a 19.4 pound dumbbell in your hand. The dumbbell is being held 12.8 inches from your…

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Q: There is a disk of cartilage between each pair of vertebrae in your spine. Suppose a disk is 0.50 cm…

A: Given: A thickness of disk = 0.50 cm A diameter of disk = 4.0 cm Disk support half the weight of a…

Q: Why are the forces exerted on the outside world by the limbs of our bodies usually much smaller than…

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Q: The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle…

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Q: Why does the suspended spring stretch more at the top than at the bottom?

A: The top part of the spring supports all of the spring’s weight.

Q: A cook holds a 2.00 kg carton of milk at arms length. What force must exerted by biceps muscle? (…

A: Mass = 2.00 kg FB--Force on biceps. Fg=mg = Weight of 2 kg carton of milk

Q: A meter stick is supported by a knife-edge at the 50-cm mark. Doug hangs masses of 0.40 and 0.60 kg…

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Q: An elastic rope is stretched between the tops of two identical posts. A man is to walk along the…

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Q: A meter stick is supported by a knife-edge at the 50-cm mark. You hang masses of 0.40 kg and 0.60 kg…

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Q: When you bend over, a series of large muscles, the erector spinae, pull on your spine to hold you…

A: Given data γ=300 θ=120 wh=160 N wT=320 N

Q: A cook holds a 2.00-kg carton of milk at arm's length must be exerted by the biceps (Fig. P8.19).…

A: At equilibrium, the sum of torques on the length is

Q: When you rub your hands together, can you push harder on one hand than the other?

A: Newton's third law of motion tells us that every action has an equal and opposite reaction. So, if…

Q: A horizontal, uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hariging from it…

A: The rotational analog of linear force is called torque. It is given by the product of the force and…

Q: A person supports himself on the ball of one foot. The normal force N=724 N pushes up on the ball of…

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Q: cm from the elbow, and the biceps muscle can supply a maximum force of 775. N (with the forearm in a…

A: Given:- The forearm has a mass of 5.00 kg. The distance from the elbow to the hand is 34 cm. If the…

Q: You are holding a 12.7 pound dumbbell in your hand. The dumbbell is being held 14.1 inches from your…

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Q: A 3m long weightless beam is supported at each end by cables. A painter weighing 900N stands 1m from…

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Q: Why is it not possible to sit upright in a chair and rise toyour feet without first leaning forward?

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Q: you are on a teeter-totter with a young girl your mass is 90 kg and the girls mass is 15 kg. The…

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Q: When throwing a football you are always instructed to follow-through. What is the advantage of…

A: The football has its unique shape. It has special instructions for holding for better grip, throwing…

Q: Consider a ladder on a horizontal floor and leaning against a vertical wall. Which of the following…

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Q: Calculate the force the must exert to hold the forearm and its load as shown in the Figure N.m 480…

A: Given : r1 = 4 cm = 0.04 m r2 = 16 cm = 0.16 m r3 = 38 cm = 0.38 m ma = 2.5 kg mb = 4 kg

Q: If you are caught outdoors in a thunderstorm, why should you not stand under a tree? Can you think…

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