A load of mass 200kg is lifted vertically upwards slowly with constant speed, over a displacement of 4m and the complete process occurs in 8s. Neglecting friction and all other losses, determine the power exerted. State the reasons of the answers.

Q: A 4.4-kg block is pushed 3.5 m up a vertical wall with constant speed by a constant force of…

A: Given information:Mass of the block (m) = 4.4 kgCoefficient of friction between the block and the…

Q: A 1000N block was pushed by a force P of 1500N up an incline upward to the right at a slope of 3…

A:

Q: How much work can a 6.0-hpmotor do in 3.0h?Express your answer to two significant figures and…

A: The expression for power is,

Q: A 32.5 kg box initially at rest is pushed 4.75 m along a rough, horizontal floor with a constant…

A: Solution:-Given thatmass of box(m)=32.5 kgdisplacement (s)=4.75 mConstant applied force (F)=145…

Q: A crane lifts a load of mass m = 500 kg vertically at constant speed v = 2 ms-'. Find the power…

A:

Q: A 4500 kg ship moves at a speed of 2 m/s, determine its power (P)? ASsume all the energy losses are…

A:

Q: At what average power must the engine of a car with a mass of 1.7 × 10³ kg, moving on an 11% slope…

A: SOlution: given that m = 1.7 × 10³ kg v = 31 km/hr =8.61 m/s slope =11%

Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…

A: Given:  displacement, S = 10 nm = 10 × 10-9 m = 10-8 m  force, F = 1.0 pN = 10-12 N Energy input, E…

Q: In 45 seconds, a 2.5-ton vehicle can reach 120 mph from rest. Exclude friction losses while…

A: Power is defined as the rate of doing work. It is calculated by dividing work done during a given…

Q: At an orange juice plant, orange juice pulp with a density of 1.25 g/ml passes through a pumping…

A: Output mechanical power

Q: Calculate the work done (in J) on a 1550 kg elevator car by its cable to lift it 37.5 m at a…

A: We have to be careful since we have to take the friction into consideration.  Given: Mass of the…

Q: A rope is used to pull a 2.22 kg block at constant speed 3.40m along a horizontal floor. The force…

A: mass of block (m) = 2.22 kg distance moved (d) = 3.40 m along a horizontal floor Force (F) = 7.35 N…

Q: A motorist driving a 147-kg car on level ground accelerates from 20.0 m/s in a time of 5.00 s.…

A: The kinetic energy of the car is, KE=12mv2KE=12147 kg20.0 m/s2KE=29400 J

Q: A typical automobile engine has an efficiency of 25%. Suppose that the engine of a 1000-kg…

A: We know a typical automobile engine has an efficiency of 25 %. we have to find the maximum grade…

Q: A 2000-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 10.00 m…

A: Given information:Mass of pile drive, mpd=2000 kgInitial distance of the driver(yid)=10+0.3=10.3…

Q: 8. A B-double truck of mass 45 tonnes is travelling at a uniform velocity of 100 km/h. The driver…

A: Given data:Mass of truck, m = 45 tonnes = 45 x 1000 kg = 45000 kg Initial velocity, u = 100 km/h =…

Q: In 45 seconds, a 2.5-ton vehicle can reach 120 mph from rest. Exclude friction losses while…

A: Solution:-Given thattime (t)=45 sInitially at restFinal speed (v)=120 mphmass of vehicle (m)=2.5 ton

Q: an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant…

A: Given data:  Weight (mg) = 400 N Height (h) = 2.20 m Time (t) = 1.60 s Required: The output power in…

Q: A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and…

A: Given, Mass of bullet m = 7.80 g = 7.80 x 10-3 Kg Initial velocity u = 500 m/s Distance d = 5.60 cm…

Q: A person in good physical condition can put out 100 W of useful power for several hours at a…

A: We know that one people produces an output of 100 W so the number of people that can produce 5 kW of…

Q: Storage tan 25 m Pump

A:

Q: A box is pushed horizontally though a displacement of 5.0 metres by a force of 55 Newtons.…

A: Given: The applied force is 55 N. The displacement of the object is 5 m. The work done by non…

Q: In a city in England with a temperature of 18 ° C, it is desired to install a wind farm with 10 wind…

A: Power output from a turbine is given by the expression, P=12ρAV3P=12ρπr2V3P=12ρπr2V3r=2PρπV3

Q: (a) Calculate the work done (in J) on a 1200 kg elevator car by its cable to lift it 38.0 m at…

A:

Q: When an automobile moves with constant speed down a highway, most of the power developeu Dy the the…

A: GIVEN:A car moving down a highway with a speed of 25m/s and has a 205 horsepower engine. 1hp=746W…

Q: Deep in the forest, a 17.0-g leaf falls from a tree and drops straight to the ground. If its initial…

A:

Q: A pail in a water well is hoisted by means of a frictionless winch, which consists of a spool and a…

A: Given, height lifted , h = 24.0 m time, t = 15.0 s mass of pail of water , m = 6.60 kg  We know that…

Q: ASK YOU A 7.80 g bullet is initially moving at 620 m/s just before it penetrates a block of wood to…

A: Given data: Mass of bullet is, m=7.80 g=7.80×10-3 kg. Initial speed of bullet is, u=620 m/s. Depth…

Q: KE₁ O yes V₁ A 55.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown…

A:

Q: A volcanic ash flow is moving across horizontal ground when it encounters a 10 upslope. The front…

A: Consider mass of the ash flow be m, the vertical distance traveled by the flow be h, and the…

Q: Ms. Dewitte's son, Theo, slides down a slide, from rest, with a length of 2.00 m at an incline of…

A: The height of the slide from the ground is, h = (length of slide)sin50° = 2sin50° = 1.53m Assuming…

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at…

A:

Q: A 61.8-kg skateboarder starts out with a speed of 1.75 m/s. He does 80.4 J of work on himself by…

A: According to this theorem, the total work done on an object is equal to the change in its energy.…