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- A particle of unit mass is moving under the force of attraction of another particle of mass m1 at a distance r. Find the mathematical model that describe the problem.arrow_forwardThe strings and frictionless pulleys have negligible masses. The coefficients of kinetic friction is 0.25 and static friction is 0.30. Block A has a mass of 3 kg and block B has a mass of 4 kg. a) What is the maximum mass block C can have before block B will start to move? b) If block C has a mass of 7 kg and was 1 m above the ground, how long would it take block C to hit the ground starting from rest?arrow_forwardFIGURE 1: Wind tunnel experiment to measure how the force of air resistance depends on velocity. A free-falling object such as a bungee jumper is subject to the upward force of air resistance. We assumed that this force was proportional to some power b of velocity as in Fu=CaVb where Fy = the upward force of air resistance [N = kg m/s? ], Ca = drag coefficient (kg/m), and V = velocity [m/s]. An individual is suspended in a wind tunnel and the force measured for various levels of wind velocity. The result might be as listed in Table 1 V (m/s) 10 20 30 40 50 60 Fu (N) 37.9 107.3 197.2 303.6 424.3 557.7 Table 1: Experimental data for force (N) and velocity (m/s) from a wind tunnel experiment. Find least sqaures approximation Fu=CaVb to the data given in Table 1.arrow_forward
- weight in pounds is 130, Determine her mass in slugs, from the following answers which of them is correct: * O 40.4 slugs O 4.04 slugs O 13.251 slugs 1275.3 slugs O 44.04 slugs Determine the weight in newton's of a woman whose weight in pounds is 130, from the following answers which of them is correct: * 587 N 687 N 578 N O 1274 N Kkments ef the lamr arm an hmn in the ngarr. The might ef the farunn is Ih wih m anler at Gir he T0 N. Delennine the ambirel mment ahr he dhn piat (a) af tr waths af thr Sin ara and the ere. inm ie falowing asnen which of thon is anet: M= 128.6 Ib.in M= 134 Ib.in M= 107.441 Ib.in O M=0 Ib.in O M=144 Ib.in The laver lumbar reginn A of the spine is the part of che spinal columa mst sIsceptible to abise while rshting escessive bending cased by the meut abat A of a Saree F-KN, Fe sisen valacs of F. - 50cH.ond h - 10 C, determine the a ut al eint A) frm the Saliming Aers which af them is EBETrel.if the aek -o: O M=500 N.m M=500000 N.m M=100000 N.m O M=100 N.m O…arrow_forwardA proton is located at x10-9 m and an alpha particle is located at x10-9 m. (a) calculate the force the proton exerts on the alpha particle. (b) Calculate the force the alpha particle exerts on the proton.arrow_forward133% + 1. Consider each of the following situations, state which of the Newton's Laws of Motion BEST illustrates the phenomenon and explain why. [. a) A person using a paddle to push a canoe forward is an example b) Whiplash can result when a car is hit violently from behind. The law explains how c) One of the Canadian women Soccer team members kicking the ball and launching it towards the goal - is an of the law. this happens to a person (without a headrest) in a car Explain. example of the that is hit from behind. law. Explain. Explain. Whiplash ED US 9 1.arrow_forward
- Kendra and her brother are pushing a stalled car. At one point, the forces acting on a the car are the following: a gravitational force of 17,400 N downward, a normal force of 17,400 N upward, Kendra’s pushing force of 235 N southward, her brother’s pushing force of 223 N southward, and a friction force of 458 N northward. Which of the following statements is accurate? There is a net force of 35,716 N acting on the car. There is a net force of 916 N acting on the car. There is no net force acting on the car. There is a net force of 458 N acting on the car.arrow_forwardAnswer the following questions: 1. A 16-pound weight moves in a horizontal straight line under the joint action of a constant force of 8 pounds in the direction of motion, and a resisting force whose magnitude in pounds is equal to twice the velocity and in feet per second. If the body starts from rest, find its velocity and the distance traveled after 1/4 second.2. A body falls from rest against a resistance that is proportional to the square root of the speed at any instant. If the terminal speed is 64 feet per second, how long will it take to attain a speed of 49 feet per second?arrow_forwardA 1,040-N crate is being pushed across a level floor at a constant speed by a force F of 390 N at an angle of 20.0° below the horizontal, as shown in the figure a below. Two figures show a side view of a crate positioned upon a horizontal surface. Figure (a): An arrow pointing downward and to the right is labeled vector F and forms an angle of 20° below the horizontal as it approaches the upper left edge of the crate. Figure (b): An arrow pointing upward and to the right is labeled vector F and forms an angle of 20° above the horizontal as it extends from the upper right edge of the crate. (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.)(b) If the 390-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).arrow_forward
- The position of a 2.6 kg mass is given by x=(2t3−5t2) m, where t is in seconds. What is the net horizontal force on the mass at t=0s? What is the net horizontal force on the mass at t=1s?arrow_forwardin Monkey and hunter case . my doctor want me to write a 5 lines about what I have learned from this screenshot. ( The simulation shows the classic physics situation of a monkey and hunter. In this case, the hunter is trying to tranquilize the monkey, so the monkey can be relocated to a better habitat. The monkey is clever—when the tranquilizer dart (in blue) leaves the gun, the monkey (in purple) lets go of the tree branch, and starts to fall straight down. Note that there is a net (not shown) at the bottom to catch the monkey, so the monkey won't get hurt.)arrow_forwardFill in the blanks about the four fundamental forces: The together, the IS photons, the is the weakest of all four fundamental forces at the atomic level. O electromagnetic force, strong nuclear force, weak nuclear force, gravitational force O strong nuclear force, gravitational force, electromagnetic force, weak nuclear force Ostrong nuclear force, electromagnetic force, weak nuclear force, gravitational force O electromagnetic force, strong nuclear force, gravitational force, weak nuclear force force, strong nuclear force, gravitational force O weak nuclear force, electromagnetic 14 16-120 Evenem 2015- IN PART 100 2012 1914- holds the atomic nucleus is used to make smoke detectors, and the 4 2arrow_forward
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning