II. Mechanical Work D What is the work done on a 40kg dumbbell if the displacement is 0.72m?
Q: Steel ball with radius of 0.06 m lays on a bottom of the lake 3 m deep. What work is needed to lift…
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Q: A 0.190-kg wooden rod is 1.20 m long and pivots at one end. It is held horizontally and then…
A: Given, Mass of rod, m=0.19kg Length of rod, L=1.2m
Q: Rusty uses a hammer to exert an applied force upon a stubborn nail to drive it into the wall. a.…
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Q: Why is work a dot product of force and displacement, and not a cross product
A: Work is scaler quantity which has only magnitude, no direction. Force and displacement are vector…
Q: Tom wanted to know the mechanical advantage of his machine. Which formula should he use P=w/t M.a =…
A: Let the input force to a system = f Let the output force from a system = F Let the work done by a…
Q: (2) The ionosphere is a layer of air high up in Earth's atmosphere. In the ionosphere, the air…
A: Given: The distance of ionosphere from the surface of the earth: 160km frequency of radio waves…
Q: A pump is required to lift a mass of 810 kgkg of water per minute from a well of depth 14.1 mm and…
A: Answer:- Given, Mass(m) = 810 kg water per minute Height (h) = 14.1 m Speed (V) = 18.1 m/s…
Q: machine can multiply forces or A. Distances B. Work C. Energy D. All of the above
A: A simple machine is a device that is used to change the magnitude and direction of the applied…
Q: 4. W - 100 J t-10 s P=? 7. W-500 J t=25s P=? *** 5. W=225 J P-25 W t=? 8. W=336 J t=? P = 14 W 6.…
A: 4) W=100 J t=10 s P=W/t=100/10=10 w 5) W=225 J P=25 w t=W/p=225/25=25 s 6) P=20 w t=15 s…
Q: 2. The yoke-and-rod connection is subjected to a tensile force of 5 kN. Determine the average normal…
A: Since you have posted multiple questions, we will provide the solution only to the first question as…
Q: need help with number 20
A: Given For student-A Force applied by student B = 30 N Height upto which box is lifted = 0.40 m Time…
Q: Total mechanical energy will remain constant during rigid body motion only if all work is done by…
A: Given Statement Total mechanical energy will remain constant during rigid body motion only if all…
Q: A steel rod 250 mm long and 200 mm in diameter is being reduced to 190 mm in diameter all over its…
A: Given:- length of rod L=250mm initial diameter D0 =200mm final diameter Df = 190mm Davg=195mm…
Q: Initial Final K, +马+馬,WK y.AE te= 0.80 s Y3D0.70m to Earth ti= 0 Earth mbarbell=13.6 kg వా
A: Given: The mass of the barbell is 13.6 kg. The diagram is as follows: Introduction: The principle…
Q: A 5500 W lathe can move an iron block at a constant speed of 4.3 m/s. What is the force applied to…
A: Given Power (P)=5500 w speed(v) =4.3 ms-1 Required force(F)=?
Q: Group Problem: You are planning to build a log cabin in Northern Minnesota on a remote hill with a…
A: Given,Weight of the log = 1000 lbsAngle with espect to horizontal = θ =20°The coefficient of kinetic…
Q: From the given figure, determine the rectangular representation of the 500 N force. F = 500 N O a. F…
A: To solve this question we will use the concept of vector transformation. Let the angle between the…
Q: You are tasked with inspecting the rigging to lift a 40,000 lb air conditioning unit. Assuming the…
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Q: An oxygen cylinder of mass 16.0 kg is pulled up a mountain side at a constant speed of 2.2 m/s by a…
A: Given: Mass of cylinder m = 16.0 kg. Speed of cylinder in upward inclination direction = 2.2 m/s.…
Q: If the child climbs too high, then the ladder will slide along the ground. c. In this situation, is…
A: required to observe the work done to observe the condition when child climbs too high and ladder…
Q: Under normal conditions a tennis ball has a diameter of 6.6 cm, but when a 90 kg professor stands…
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Q: Compute the work required to build a concrete column of height 5m and square base of side length 2m.…
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Q: Complete Solutio
A: Given as, k=8.8 Nmm,W=90,000 N-mm,Initial length=300 mm.
Q: Water is pumped between two tanks (A and B) in a single pipe with energy equation of HP3DZ8-ZA…
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Q: A 7kg cat walks to the end of a 15 kg board resting on two saw horses as shown below. When the cat…
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Q: Choose the best answer that describes the energy of the pendulum. The height of the pendulum is…
A: In the figure the for the simple pendulam we know that if A and E is the maximum amplitude position…
Q: You are working on a design for a runaway truck ramp as indicated in the figure below. The hill is…
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Q: Find the work done in joules by gravity as an object of the mass m310 kg is raised up at constant…
A: Mass = 10 kg Displacement = h2 - h 1 = 80m - 22 m = 58 m As we know Workdone is given by W Which…
Q: Explain if it is possible for a system to have negative potential energy
A: Answer Potential energy is the energy stored in any system or object by virtue of its position.…
Q: What is Law of Conservation of Mechanical Energy?
A: According to conservation of energy Total energy of isolated system remains constant.
Q: A 30-m cable of density 3 kg/m hangs vertically from a crane. Answer the questions below using that…
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Q: 1. Engine power is sometimes expressed in terms of "horsepower." One horsepower was defined by James…
A: Solution: Given data Radius(R)=12 ft=3.65 mForce(F)=800 N
Q: The blade on a snowplow turns the wet snow through an angle of 120∘ but off to one side at 30∘. If…
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Q: done whe the point of application of the Force F is given a displacement d is A dxF B Fxd c |F]d|…
A: The definition of work in physics reveals its relationship to energy – whenever work is done, energy…
Q: 7. A swing with a beautiful seaview is hung from a tree branch that is found to obey Hooke's law so…
A: a) Given, mass,m = 20 kg Let acceleration due to gravity be g= 10 m/s2. We know from Hook's law, F =…
Q: A spring with a spring constant of 100 N/m is stretched by a force of 10 N. What is the elastic PE…
A: 1. According to the given question, here, a spring having a spring constant is, K = 100 N/m Is…
Q: A class I lever has the …………….. in the middle: a. Load b. Fulcrum c. Effort d. Lever arm
A: Levers are used to over come large resistance with small effort.
Q: 26. You are using a screwdriver to screw in a screw that has a pitch of 3 cm. The screwdriver has a…
A: Given that the value of the pitch of the screwdriver and radius of the handle.Then We have to…
Q: The block was pushed up the slope. The block went up the slope and then began to slide down to its…
A: The speed of the block when it comes back down and reaches its initial position is the same when…
Q: What is the power formula when work is given? a. What is the unit of measurements that…
A: Power is defined as the rate at which work is done upon an object. Power is a time-based quantity.
Q: The awe-inspiring Great Pyramid of Cheops, shown belown, was built more that 4500 years ago. Its…
A: Simple problem on gravitational potential energy. Please have a good look
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