A man produces a power output P as he lifts a weight of 200 newtons to height H in time T. If a second person is to lift the same weight to height of 2H in time T/2 he would produce a power output of a) P/4   b) P/2   c) 2P   d) 4P

Q: An engine is being used to raise a 89.0 kg crate vertically upward. If the power output of the…

A: Given: mass of crate, m = 89 kg power output of the engine, P = 1620 W vertical distance, h = 18.7 m

Q: Lucas lifts a 100 lb weight at a constant speed. Elliot lifts the same 100 lb weight at a constant…

A: As we know, expression of work done and power can be express as -  Where,  W = Work done  P = Power…

Q: A skier of mass 65 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

A: Given:-  mass of the skier m= 65 kg  height h= 85 m  slop is θ=30° The speed of the skier is v= 2.2…

Q: A weighlifter lifts a 50-kg barbell a vertical height of 2.0 m in 5.0 s. What is the average power…

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Q: A cable exerts a constant upward tension of magnitude 2.54 × 10“ N on a 2.40 x 10° kg elevator as it…

A: Work done=FdcosθF is tension force=2.54×104 Nd is vertical distance=3.10 mθ is angle between force…

Q: A 5.0 N force is applied to a 2.0 kg object initially at rest. The force was removed after the…

A: Given data: Force (F) = 5.0 N Mass (m) = 2.0 kg Initial velocity (v0) = 0 m/s Displacement (d) = 2.5…

Q: A (6.40x10^1) kg woman runs up a flight of stairs in 5 s. Her net upward displacement is 5 m. What…

A: Given data:  Mass (m) = 6.40×101 kg Time (t) = 5 s Height (h) = 5 m Required: Power (P)

Q: Calculate how much work I did on the 2 kg tricycle when I pulled it with a force of 4.68 N for a…

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Q: A loaded elevator has a total mass of 29 kg and is lifted to a height of 200 m in a time of 45s.…

A: Given: The mass of the object is 29 kg. The height of the object is 200 m. The time interval is 45…

Q: Suppose that as part of their training, the football players of MSU went up a stair in 66 s. The…

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Q: A block of mass 1.5 kg is at rest on a frictionless floor. A constant force F is subjected to the…

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Q: A particle with a mass of 6 kg; It changes position over time according to the equation x = 2t ^ 3 +…

A: Given Data: The position is, x=2t3+5t2+10t. The mass is, m = 6 kg. The time considered is, t = 3 s.…

Q: As shown in the figure below, two masses m1 = 4.20kg and m2 which has a mass 50.0% that of m1, are…

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Q: bicycle and its rider together have a mass of 72.4 kg. What power output of the rider is required to…

A: Given Mass m = 72.4 kg Speed v = 4.9 m/s If object is moving with constant speed acceleration must…

Q: A 160-kg object is lifted at a constant speed through a height of 36 m by a crane. If the crane…

A: If a body is lifted up to a height  with a constant speed, the force needed is equal to its weigh…

Q: An object of mass m=1.4 kg is sliding from top to bottom of an inclined plane of inclination angle 0…

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Q: An advertisement claims that a certain 1,200-kg car can accelerate from rest to a speed of 25 m/s in…

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Q: A girl with a mass of 17.46 kg on a swing. Her friend gives her a push such that the maximum height…

A: Given: The mass of the girl is 17.4 kg. The maximum height of a girl from the ground surface is 0.39…

Q: he surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of…

A: The initial velocity of the surfer, vi = 2.83 m/s The final velocity of the surfer, vf  = 10.4 m/s…

Q: For the three cases shown below, assuming the displacement is 4.0 m to the right. Match the answers…

A: Given data: Displacement (d) = 4.0 m, to the right

Q: How much power is needed to lift a 75-kg student vertically upward at a constant speed of 0.33 m/s?…

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Q: A top fuel dragster with a mass of 600.0 kg starts from rest and completes a quarter mile (402 m)…

A: Given: mass of top fuel dragster, m = 600 kg Initial speed, u = 0 (starting from the rest) Final…

Q: A 4.20-kg box has an acceleration of 2.10 m/s2 when it is pulled by a horizontal force across a…

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Q: A cable lifts a 1200-kg elevator at a constant velocity for a distance of 35 m. What is the work…

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Q: A cord is used to vertically lower an initially stationary block of mass M = 8.7 kg at a constant…

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Q: An elevator car has a mass of 1 500 kg and is carrying passengers having a combined mass of 450 lb.…

A: (a) The power motor deliver to lift the elevator car is P=Tv=mc+mpg+Ffv                   Elevator…

Q: How much power would be required to hoist a 48 kg couch up to a 26 m high balcony in 5.0 seconds?…

A: p=Et=mght

Q: How much total mechanical work does a weightlifter do in 10 repetitions of lifting (and lowering)…

A: Total mechanical work is change in potential energy. In this question after 10 repetitions of…

Q: A skier of mass 61 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

A: (a)   The work required to pull the skier on the slope can be determined as follows. W=Fsloped=61…

Q: A student carries a bag weighing 5 kg from the ground floor to his class on the first floor that is…

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Q: Which of these is an example of no work being done?   a. a child pushes a toy car across a flat…

A: Work done is the energy transferred when a force is displaced by a distance.

Q: The elevator of a large building is to raise a net mass of 400 kg at a constant speed of 12 m/s…

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Q: As shown in the figure below, two masses m₁ = 5.10 kg and m₂ which has a mass 60.0% that of m₁, are…

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Q: A person does 400 J of work in 5 sec. Power of the person is calculated tto be ? Choose one correct…

A: Given, Work done by the person W = 400 J Time t = 5 sec We know the expression for power  P=Wt

Q: A particle, mass 8 kg, moves along the y axis with a speed of 3.3 m/s. It experiences a force of 16…

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Q: A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is hy =…

A: Given:The depth of the well is 9.5 m. The force is 59.5 N. The total mass is 3.1 kg.

Q: How much total mechanical work does a weightlifter do in 10 repetitions of lifting (and lowering)…

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Q: A 1390 kg car accelerates uniformly from rest to 10.4 m/s in 2.87 s. Find the work done on the car…

A: Given:   Mass of car, m= 1390 kg Initial velocity of car , u = 0 Final velocity of car, v = 10.4 m/s…

Q: A cheetah can accelerate from rest to 7.4 m/s (about 18 m/h) in 1.8 seconds. How much average power…

A: initially at rest, u=0 msfinal velocity, v=7.4 mstime, t=1.8 smass, m=51 kg

Q: 20. Student A lifts a 40.-newton box from the flöor to a height of 0.30 meter in 2.0 seconds.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: As shown in the figure below, two masses m1 = 5.10 kg and m2 which has a mass 60.0% that of m1, are…

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Q: Suppose an object at a given location has potential energy of U¡ = 10 J and kinetic Dry of K; = 20…

A: Given data:  Initial potential energy (Ui) = 10 J Initial kinetic energy (Ki) = 20 J Final potential…

Q: 0 F=12N 4kg 10m A crate of mass m-4 kg is pulled horizontally by a rope exerting a 12 N force. The…

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Q: An accelerating object of mass m=14 kg is fired with an initial speed v-2 m/s at a starting point.…

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Q: A force of 3.3 N acts on a 24 kg body initially at rest. Compute the work done by the force in (a)…

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Q: A forklift at a warehouse moves at a constant speed of 36 km•h-1. A constant frictional force of 800…

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Q: )An object of mass 5 Kg with an initial speed of 10 m/s moves from m to m. Only two constant…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: Two persons weigh same and climb the same flight of stairs. Person 1 takes 3 sec and person 2 takes…

A: Given : Two persons weigh same and climb the same flight of stairs. Person 1 takes 3 sec and person…

Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.