The elevator of a large building is to raise a net mass of 400 kg at a constant speed of 12 m/s using an electric motor. Minimum power rating of the motor should be?

Q: A bicyclist starting from rest applies a force of F = 359 N to ride his bicycle across flat ground…

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Q: A helicopter lifts a 71 kg astronaut 12 m vertically from the ocean by means of a cable. The…

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Q: 10. A small motor is used to operate a lift that raises a load of bricks weighing 1200 N to a height…

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Q: A 2.50 kg beverage can is thrown directly downward from a height of 4.00 m, with an initial speed of…

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Q: During the Powerhouse lab, Gab runs up the stairs, elevating his 98 kg body a vertical distance of 3…

A: Given: The mass of the object is 98 kg. The vertical distance covered by the object is 3 m. The time…

Q: A small motor is used to operate a lift that raises a load of bricks weighing 1200N to a height of…

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Q: A 64.0 kg man, standing on a frictionless walkalator inclined at θ=33.0° below the horizontal, holds…

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Q: Q4. (b) A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The…

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Q: A 64 kg human sprinter can accelerate from rest to 10 m/sm/s in 3.2 s . During the same time…

A: P=∆E∆t=0.5mv2f-v2i∆t

Q: 5. A loaded ore car has a mass of 1200 kg and rolls on rails with negligible friction. It starts…

A: The power of the motor when the speed is constant is the work in a determinate time, P=Wt The work…

Q: A chain attached to an object with a mass of 68.0 kg is propelled by a motor to move it up an…

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Q: Your friend (mass 65.0 kg) is standing on the ice in the middle of a frozen pond. There is very…

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Q: A 4.10-kN piano is lifted by three workers at a constant speed to an apartment 20.7 m above the…

A: Given,Weight of the piano, F = 4.10 kNheight of the apartment, h = 20.7 mPower delivered by each…

Q: When its engine of power 76 kWkW is generating full power, a small single-engine airplane with mass…

A: Given:               Engine Power , P = 76 kW = 76×103W                                mass  M= 710…

Q: 50. A skier of mass 70 kg is pulled up a slope by a motor- driven cable. (a) How much work is…

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Q: A 64.0 kg man, standing on a frictionless walkalator inclined at =33.0° below the horizontal, holds…

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Q: A model drag car is being accelerated along its track from rest by a motor with a force of 75 N, but…

A: Applied force, F = 75 N , drag force, f =30 N, distance, s = 2 m

Q: 2. A 50.0kg marathon runner runs up the stairs to the top of a 443m tall tower. To lift herself to…

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Q: A 64.0 kg man, standing on a frictionless walkalator inclined at 0=33.0° below the horizontal, holds…

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Q: An elevator can carry a maximum load of 1168 kg (including the mass of the elevator car). The…

A: The weight pf the counter drops down a height h when the elevator moves up a height. So the elevator…

Q: A 64.0 kg man, standing on a frictionless walkalator inclined at θ=33.0° below the horizontal, holds…

A: Mass of the man M=64 kg, mass of the grocery cart m=12.8 kg, inclination of the walkalator below the…

Q: A toy robot powered by an electric motor accelerates from rest to 0.800 m/s in 22.0 ms. The total…

A: Write a given value of this question. v=0.800m/s t=22ms=22×10-3sm=740g=0.740kg

Q: A football player is dragging a 100 kg sled across an Astroturf field at a constant speed of 5 m/s…

A: Mass is sled (m) = 100kg  Velocity (v) = 5m/s Tension in the rope is (F) = 500N

Q: A physics student shoves a 0.50-kg block from the bottom of a frictionless 30.0° inclined plane. The…

A: The energy that objects store and is used to make a movement is known as potential energy. It is…

Q: A 64.0 kg man, standing on a frictionless walkalator inclined at 0=33.0° below the horizontal, holds…

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Q: **28. As the engine in a car forces its wheels to turn, static friction between the road and the…

A: Given,

Q: A 2.25 kg cube glides down from the top of a 1.45 m high frictionless ramp. The angle of the ramp…

A: Solution: Given: m = mass of object = 2.25 kg h = height of inclined plane = 1.45 m θ = angle of…

Q: 15. A constant force is applied on a block having a mass of 4 kg and changes its velocity from 4 m/s…

A: Given data : Block's mass, m=4 kg Block's initial velocity, vi=4 m/s Block's final velocity, vf=8…

Q: A 64.0 kg man, standing on a frictionless walkalator inclined at 0=33.0° below the horizontal, holds…

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Q: A 64.0 kg man, standing on a frictionless walkalator inclined at 0=33.0° below the horizontal, holds…

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Q: Question 9 Suppose the object starts from rest, the slide is frictionless and m = 3.50 kg. (Neglect…

A: (A) Apply the conservation of energy between points A and B. Since the object starts from rest, so…

Q: certain 1500 kg car can accelerate from rest to a velocity of 30.0 m/s in 8.0 s. What is the average…

A: power = work done/time

Q: A student who weighs 559 N climbs a stairway (vertical height of 3.7 m) in 22 s. (a) How much work…

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Q: Jetski is moving over the water at 12 m/a. The frictional force resisting is 800 N. What ie the…

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Q: 10. A small motor is used to operate a lift that raises a load of bricks weighing 1200 N to a height…

A: 10. Given : F = 1200 N h = 15 m t = 30 s

Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1000 kg, which is…

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Q: . A skier of mass 70 kg is pulled up a slope by a motordriven cable. (a) How much work is required…

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Q: A 263 g ball of clay falls onto a vertical spring. The spring constant k = 2.52 N/cm.  The clay…

A: Given data: Mass of the clay ball is, m = 263 g = 0.263 kg The spring constant is, K = 2.52 N/cm =…

Q: A car travels with a constant speed of 15 m/s. The car's engine produces a 4000N pushing force in…

A: Given Data:- Speed of the Carr is v=15 m/s Force produced by the engine of the car is F=4000 N…

Q: E Leo bas designed a winch to pull a 120kg crate up a rough ramp. The crate travels with a constant…

A: