A fully elevator cabin has a mass of 1200 kg. In 3.0 minutes, the cabin must be raised to a height of 54 meters. Since the counterbalance had a mass of 950 kg, the elevator's engine must assist in balancing the cabin. What is the average power of the motor's tractive force operating on the cabin through a tow rope?

Q: A machine carries a 8.0 kg package from an initial position of d ; = (0.6 m) i + (0.79 m)j + (0.26…

A: Given: di=0.6m i^ + 0.79m j^ + 0.26m k^df=10.5m i^ + 15.0m j^ + 10.2m k^∆t = 15 sF = 4.0N i^ +7.0N…

Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…

A:

Q: A 4.23 kg bundle starts up a 22.4° incline with 103 J of kinetic energy. How far will it slide up…

A: The expression from work energy theorem,

Q: A 10 N force is needed to move an object with a constant velocity of 5.0 m/s. What power must be…

A:

Q: 9 A box moves on a frictionless horizontal surface under the influence of the two forces = F₁ = (50î…

A: Power = It is the dot product of force vector to the velocity vector.

Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…

A:

Q: What is the work required to raise a 200 kg barbell to a height of 1.25 m? O 2 500 J O 1755 J O 3…

A: Write the expression for the work done to raise a barbell. Here, m represents the mass, g…

Q: *68. D In 2.0 minutes, a ski lift raises four skiers at constant speed to a height of 140 m. The…

A:

Q: The weight of the E elevator when fully loaded is 750 kg and is attached to a 250 kg counterweight W…

A: Part (a) The free body diagram for E can be drawn as below, Since the elevator is moving down with…

Q: A person uses a motorized bicycle to climb a road inclined 30 ° above the horizontal with constant…

A: Mass of the person +bicycle M=102 kg Angle of inclination θ=300 Displacement of the person d=86 m…

Q: The motor of a crane uses power P to lift a steel beam. By what factor must the motor's power…

A: Given data: The power of the motor of a crane required to lift a steel beam is P.   The expression…

Q: What average power would a 1500 kg speedboat need to go from rest to 25 m/s in 6 seconds if the…

A:

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

A:

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

A:

Q: A man produces a power output P as he lifts a weight of 200 newtons to height H in time T. If a…

A: Given : F = 200 newtons

Q: what is the power required for a 55 kg student to run up a set of stairs that has a height of 20 m…

A:

Q: A 4.0 kg bundle starts up a 30 incline with 128 J of kinetic energy. How far will it slide up the…

A: From conservation of energy,

Q: What is the work required to raise a 200 kg barbell to a height of 1.25 m? From the problem, what is…

A: Given data:  Mass (m) = 200 kg Height (h) = 1.25 m Required: Force (F)

Q: How much time is required for a elevator to lift a 2000 kg load up 28 m from the ground level, if…

A: Given data: Mass m = 2000 kg Distance from ground level d = 28 m Power P = 13 kW

Q: a 1400 kg block of granite is pulled up an incline at a constant speed of 1.34 m/s by a cable and…

A:

Q: In 1.62 minutes, a ski lift raises four skiers at constant speed to a height of 146 m. The average…

A: Given information: Here, m is the mass of each ski, h is the height up to which skies are raised in…

Q: car (120 kg) accelerates from the rest to 25 m/sec in 11 sec, what is the value of the generated…

A:

Q: A 710 kg car drives at a constant speed of 23 m/s.  It is subject to a drag force of 434 N.  What…

A: SOlution: Given that m = 710 kg v =  23 m/s Fdrag = 434 N slope of 2.0°

Q: Calculate the power output needed for a 989.00 kg car to climb a 2.00° slope at a constant 45.00 m/s…

A: Given, Mass of  car m = 989 Kg Slope θ =2∘   Speed v = 45 m/s friction f = 749  N   We know the…

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

A:

Q: A car's engine generates 80000 W of power as it exerts a force of 6000 N. How long does it take the…

A: Given, Power generates engine of the car, P = 80000 Wforcec exerted by engine, F = 6000 Ndistance…

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: The mass of the elavator is 4.7x103 kg. The displacement of the elevator is 233 m vertically.…

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…

A:

Q: 19. If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at…

A: average weight of a passenger= 660 N Total weight lifted= 100×660= 66000 N Height H= 150 m time…

Q: A particle of mass 0.4 kg moves a long a straight line according to x(t) = 2t + t3, where t is in…

A: Power is defined as time derivative of the work done on a system, or work done per unit time. Work…

Q: How long does it take for a forklift with a useful power output of 980 watts, to raise a 100-kg…

A:

Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…

A:

Q: A 4.0 kg bundle starts up a 30° incline with 128 J of kinetic energy. How far will it slide up the…

A: Given: The mass of the bundle: m = 4.0 kg. The angle of incline: θ = 30o. The initial kinetic…

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

A:

Q: What is the power developed by the student running the stairs?  1N = 0.225 lb 1 hp = 746 watts…

A:

Q: What power is needed to move a 13.4 kN car up an 8 degree incline with a constant speed of 80 kph…

A: Given: Mass of car, m = 13.4 kN = 1366.42 kg Angle = 8 degree Speed, v = 80 kph = 80 X 5/18 = 22.22…

Q: A 10,000 W motor operates an elevator weighing 5,000 N. Assuming no frictional losses, how high is…

A: Expression for power P=EPt=mght=Whth=PtW

Q: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from…

A: Given that, mass of the ore car is 950kg and speed is 2.40m/sec in time 10.0sec and also angle is…

Q: How long does it take for a forklift with a useful power output of 980 watts, to raise a 100-kg…

A: Given data: Power (P) = 980 watts Mass (m) = 100 kg Height (h) = 2.0 m Required:  Time (t)

Q: A person used 60 W of power to carry a 55 N box up a 5 m ladder. How long did it take him to do…

A: We know, work done (w)= Force×displacement =F×d And power(P)= W/t So time taken to do the work (t) =…

Q: A woman uses a pulley and a rope to raise a 20 kg weight to a height of 2 m. If it takes 4 s to do…

A: mass, m = 20 kg  height, h = 2 m  time, t = 4s  The formula for energy is  E = m g h  The power is…

Q: The loaded cab of an elevator has a mass of 2.40 × 10° kg and moves 233. m up the shaft in 17.0 s at…

A: Given mass of a cab = 2.40 × 103 kg ddistance moved = 233 m time = 17 sec speed = constant We have…

Q: Consider the figure below: 120 N m = 30.0 kg f = 5.00 N d = 0.800 m w N Calculate the total power…

A:

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.