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A: Given: mass of bigger block M=700 g=0.7 kg mass of smaller block m=200 g=0.2 kg Force F=1.9 N…
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Q: The weight forces are internal to the system. O True O False
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- A person is pushing a fully loaded 28.90 kg wheelbarrow at constant velocity along a plank that makes an angle 32.0° with the horizontal. The load is distributed such that the center of mass of the wheelbarrow is exactly halfway along its length L. What is the magnitude of the total force F, the person must apply so that the wheelbarrow is parallel to that plank? You may neglect the radius of the wheel in your a nalysis. The gravitational acceleration is g = 9.81 m/s. N.A 1530-kg automobile has a wheel base (the distance between the axles) of 2.90 m. The automobile's center of mass is on the centerline at a point 1.00 m behind the front axle. Find the force exerted by the ground on each wheel. each front wheel kN each rear wheel kNA 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.
- Consider the woman doing push-ups in the figure. She has a mass of 51.3 kg, CG land the distance from her feet to her center of mass is 0.85 m, while the distance from her feet to her hands is 1.7 m. a Freaction b Part (a) What force in newtons should the woman in the figure exert on the floor with each hand to do a push-up? Assume that she moves up at a constant speed. Part (b) The triceps muscle at the back of her upper arm has an effective lever arm of 1.25 cm, and she exerts force on the floor at a horizontal distance of 16 cm from the elbow joint. Calculate the magnitude of the force in newtons for each triceps muscle. Part (c) How much work in joules does she do if her center of mass rises 0.21 m? Part (d) What is her useful power output, in watts, if she does 25 pushups in one minute? For the sake of simplicity, ignore any power used by her muscles lowering her body during each pushup.A 1.5 kg block resting ina rough flat surface is pulled by a string. The string makes an angle of 20 degress with the horizontal. The coefficient of static friction between the blodk and the surface is 0.35. What is the maximum tension in the string to keep the block unmoved?This problem concerns the concept of tension in a rope. Consider a rope subjected to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An arbitrary point P divides the rope into a left-hand segment L and a right-hand segment R. Figure wi L pull R 232 pull 1 of 3 Part A For segment R and segment L to hold together, they must exert forces on each other. What is the direction of the force exerted on segment R by segment L? View Available Hint(s) left right Submit Part B FLR Assume that segment R exerts a force of magnitude T' on segment L. What is the magnitude FLR of the force exerted on segment R by segment L? Give your answer in terms of T and other constants such as g. ► View Available Hint(s) = Submit % ΑΣΦ www ?
- A professional athlete tears their Achilles tendon. There are two muscles in the back of the leg that pull upward on the Achilles tendon, as shown in the image below. (The Achilles tendon is the gray part above the heel) F₂ (250 N) F, (250 N) (a) Using information from the image above, what is the magnitude of the total force on the Achilles tendon? Number (b) What is the direction of the force on the Achilles tendon in the image? Up Down Left 20% 20° RightThe coefficient of static friction between a car’s tires and the ground is μs = .85. What is the mass of the car if it takes 9620N of force to make the tire begin to roll?The bear of weight 700 N walking on the horizontal beam pivoted at point A and supported by a rope at an angle 60∘ on point B. The bear wants to reach a basket full of honey. The basket weighs 80 N. The honey basket weighs 200 N, and the beam length 6 m. When the bear in at ? = 1 m, a. Find the tension of the rope supporting the beam. b. What is the component of the forces exerted on the wall (point A)?
- Two children push on opposite sides of a door during play. Both push horizontally and perpendicular to the surface of the door. One child pusnes witn a force of 19.5 N at a distance of 0.595 m from the hinges, and the second child pushes at a distance of 0.465 m. What is the magnitude of the force, in newtons, the second child must exert to keep the door from moving? Assume friction is negligible. F, =AB rigid made of a smooth materialbar on a frictionless horizontal surface.is standing. A force of 2 N at end A of the rodapplied perpendicular to the length of the bar.Since the weight of the bar is 3 kg, A and BCalculate the accelerations of the points.The base of an automobile jackstand forms an equilateral triangle of side length 12 in. and is centered under the collar A. Model the structure as one with a ball and socket at each joint and determine the force in members BC, BD, and CD. The forces are positive if in tension, negative if in compression. Neglect any horizontal reaction components under the feet B, C, and D. Assume F-700 lb, b-12 in., h-17 in. Answers: BC- i BD= i CD- i lb lb lb