(II) A 65-kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 23° hill. The skier is pulled a distance x= 320 m along the incline and it takes 2.0 min to reach the top of the hill. Ifthe coefficient of kinetic friction between the snow and skis is  μk= 0.10what horsepower engine is required if 30 such skiers (max) are on the rope at one time?

Q: Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a…

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Q: The loaded cab of an elevator has a mass of 1.80 x 10³ kg and moves 225. m up the shaft in 23.0 s at…

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Q: A constant force F = (2.0i + 4.0j ) N acts on a particle as it moves along a straight line path. If…

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Q: A piano mover is pushing a 240-kg piano a distance d=5.0 m with a force parallel to the floor of…

A: The given data are: m=240 kgd=5 mFp=480 Nμ=0.18u=m/s Here, m denotes the mass, d denotes the…

Q: The loaded cab of an elevator has a mass of 3.50 × 10³ kg and moves 244. m up the shaft in 18.0 s at…

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Q: A 0.25-hp motor is used to lift a load at the rate of 5.0 cm/s. How great a load can it raise at…

A: Given: The power is 0.25 hp. The constant speed of the motor is 5 cm/s.

Q: is pushed 4.O m along hori zontal floor by A 2 kg block a force of magnitude 25N at angle Q = 30.0°…

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Q: Assume g= 9.8 m/s² near the surface of the Earth. Traveling in a mountainous area, a bus of mass 3…

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Q: i. A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of…

A: Given  Mass of block = 5.0 kg  Angle =30°  coefficient of friction=u= 0.3    Displacement =d= 3.0m…

Q: A cyclist is working at a rate of 0.20 kW when he is ascending a hill at a constant speed of 18 km…

A: Working rate = power = 0.20 kW  Speed = v = 18km/h = 5 m/s Mass of cyclists and bicycle = m = 80 kg…

Q: A block with a mass of 12.5kg is pulled up a smooth incline that makes an angle of 15.0° with…

A: Given data:   Mass of block (m) = 12.5 kg Inclined angle (θ) = 15.0° Power output (P) = 35 W…

Q: (II) What minimum horsepower must a motor have to beable to drag a 370-kg box along a level floor at…

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Q: (II) Estimate the work you do to mow a lawn 10 m by 20 mwith a 50-cm-wide mower. Assume you push…

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Q: The loaded cab of an elevator has a mass of 4.70 x 10° kg and moves 233. m up the shaft in 21.0 s at…

A: Given Information:- Mass of the loaded cab of the elevator is m=4.70×103 kg Distance h=233 m Time…

Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1200 kg, which is…

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Q: A boxed 10.0-kg computer monitor is dragged by friction 5.50 m up along the moving surface of a…

A: Given: The mass of the computer monitor is 10 kg. The displacement of the object along the plane is…

Q: Suppose the total work done on a 1620-kg car as it coasts 25.0 m down a hill with f = 6.00° is…

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Q: In the question given as follows, determine the work done by the constant force :-   The locomotive…

A: Given,  massm=7 tons=7000 kg displacement (d)=0.25 mile=402.336 m

Q: A loaded elevator has a total mass of 28 kg and is lighted to a height of 200 m in a time of 45s.…

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Q: 55 ILW In Fig, 8-51, a block of mass m 25kg slides head on into a spring of spring constant k 320…

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Q: It takes a force of 1450 N to keep a 1300-kg car moving with constant speed up a slope of5.25°. If…

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Q: Imagine that a team of engineers wants to determine how a new car will perform on hills. The car has…

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Q: Constant power P is delivered to a car of mass m by its engine. Show that if air resistance can be…

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Q: A Boeing 787-9 jetliner has a mass of 245,000 kg in cluding passengers . Its two engines produce a…

A: m = 245000 kg F = 642000 N v = 623km/h = 623*5/18= 173.06 m/s

Q: A block of weight 3.6 N is launched up a 30 inclined plane of length 2.25 m by a spring with spring…

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Q: A 4000-kg elevator starts from rest accelerates uniformly to a constant speed of 2.0 m/s and…

A: The potential energy of a body is given by PE = mgh, where m = the mass of the body g = acceleration…

Q: A 46.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of…

A: Coefficient of friction, ratio of the frictional force resisting the motion of two surfaces in…

Q: We would like to place 300 m long ski lift which moves with a towing speed of 12 km/h, on a steep…

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Q: An engine of mass 65S tonnes pulls a train of mass 300 tonnes up an incline of 30°. The train starts…

A: (a) Using kinematic expression for acceleration v2=u2+2asa=v2-u22s=65 km/h2-0223 km1 m/s3.6 km/h21…

Q: A 20 kg box of books is pushed along a rough, horizontal surface by a constant force of 70N acting…

A: W=Fdcosθ=70 N3 mcos15°=204 J

Q: Calculate the power output of the motor of a 1500 kg car traveling on a level road at a speed of 90…

A: A) mass of car = 1500 kg constant speed (v) = 90 kmhr frictional force = 750 N

Q: A 2.0-kg mass is released from rest at the top of a plane inclined at 20o above horizontal. If there…

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Q: (II) If a car generates 18 hp when traveling at a steady 95 km/h what must be the average force…

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Q: When its 75-kW (100-hp) engine is generating full power, a small single-engine airplane with mass…

A: Given: m = 700 kg, v = 2.5 m/s, g = 9.8 m/s² Where  m = mass of the engine, g = acceleration due to…

Q: A 1300-kg elevator carries a maximum load of 750 kg. A constant frictional force of 3000 N retards…

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Q: Consider a 1200-kg car cruising steadily on a level road at 90 km/h. Now the car starts climbing a…

A: The additional power must be provided by the engine to overcome the component of gravitational force…

Q: A person pulls a 75-kg box 20 m along a horizontal floor by a constant force Fp = 125 N, which acts…

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Q: When its 75-kW (100-hp) engine is generating full power, a small single engine airplane with mass…

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Q: A 55 kg motorcyclist is flying through the air at 72 km/h at the apex of the jump 8.3 m above the…

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Q: As part of a charity fund-raising drive, a Chicago marathon runner of mass 50.0 kg runs up the…

A: Given data:  Mass of runner (m) = 50.0 kg Height of building (h) = 443 m Time (t) = 15.0 minutes…

Q: A barge K is towed in a channel by a haul vessel L. In the towing rope acts a force S = 9 kN, which…

A: Given: Force, S = 9 k N = 9000 N The angle between rope and rail track, α = 28°

Q: What are the average powers a car weighting 1.2 × 10³ kg has to use (power of the car's engine) to…

A: Given: mass of the car (m) = 1200 kg v1 = 0 m/s v2 = 14 m/s v3 = 28 m/s Time in both cases (t) = 4 s

Q: The loaded cab of an elevator has a mass of 2.40 × 103 kg and moves 181. m up the shaft in 28.0 s at…

A: Given: The mass of the loaded elevator is 2.4x103 kg. The time interval is 28 s. The displacement in…

Q: A 0.5-kg ball is thrown with a speed of 15.6 m/s at an angle 37.7 degrees. How high does it go? To…

A: Given: Mass of the ball m = 0.5 kg. The initial velocity of the ball v = 15.6 m/s. Angle of…

Q: A snowboarder with a mass of 98kg is initially stationary on a hilltop, then slides down on the…

A: jjjjjjjj

Q: A mass of 2.0kgis projected with a speed of 5.5m/sup a plane inclined 20 degrees with the…

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Q: determine the work done to drag piano horizontally along 2.0 m of the level floor with the…

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