Escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm in length, determine the power of a motor needed to lift an average mass of 150 kg per step. There are 32 steps. if the escalator is not moving, determine the constant speed at which a man having a mass of 80 kg must walk up the steps to generate 100W of power-the same amount that is needed to power a standard light bulb

Q: Determine the work done by a locomotive in drawing a freight train for 1 mi at constant speed on a…

A: Given data:   *The magnitude of the constant force applied by the locomotive is F=6000 lb. *The…

Q: what is its average speed for the whole trip?

A:

Q: MN m 0.5 m Each ball has a negligible size and their respective mass are 9-kg and 3-kg. Each ball is…

A: Given: mA=9  kg mB=3  kg r=0.5m M=t2+2 V(t=0s)=9m/s   To find: V(t=6s)

Q: A car is towing a 50 kg load using a cable on a rough track with an acceleration of 4 m/s2.…

A:

Q: b. Assume the robot has a mass M. If it needs to travel 1 km in 30 minutes whilst picking up rubbish…

A:

Q: A block of mass, M = 25 kg, is at rest on the horizontal. If μₛ = 0.3 and a constant force of 100 Nt…

A:

Q: A worker horizontally pulls a package for a distance of 100 m. A rope connecting the package to the…

A:

Q: A truck with mass of M is going to tow the car with mass m. For values of M and m please Follow the…

A:

Q: A flexible cable with supports at the same elevation has a span of 900ft. The cable weighs 0.75 lb /…

A: To determine the maximum tension in the cable T

Q: The work done by a car traveling at a constant speed on a flat road can be computed based on the…

A: (a) Calculate the distance travelled in first 20 s. D = 60*0.447*20…

Q: Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown…

A: mB=76kg hB=2.1m hj=3.5m We need to find The mass of the Juggles

Q: A bucket which has a mass of 910g when empty and contains 3 litres of water is swung round in a…

A: When a body rotates in a circle it experiences a outward force called centripetal force, which is…

Q: A 60kg woman holds a 9kg package as she stands within an elevator that briefly accelerates upward at…

A:

Q: The 50-lb load is hoisted by the pulley system and motor M. If the motor exerts a constant force of…

A:

Q: A block with a mass of m is dropped from a certain height. An undeformed spring with a spring…

A: Given:Spring constant, k=450 N/mDistance between the top of the spring and the block, S=3 m

Q: Top secret crates used for shipping leg warmers are released down an incline at point A with a speed…

A: Given-Information:- Speed, vo = 2 m/sAngle, θ =31oFrictional value, μk = 0.23Rate, 3.4 m/sLength ,…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: The weight of the elevator is The counterweight is .The upward velocity of the elevator is

Q: An automobile having a mass of 2000 kg travels up a 7 degree slope at a constant speed of v = 100…

A: Given    Mass, m = 2000 kg Velocity, v = 100 km/h                  = 27.77 m/s Efficiency = 0.65…

Q: A body with a weight of 258 lb changes it velocity from 25 ft/s to 146ft/s. Calculate the change in…

A: The energy which a body has due to its motion is known as kinetic energy of the body.…

Q: Part A The crate, having a weight of 58 lb, is hoisted by the pulley system and motor M. The crate…

A:

Q: A 1-lb stone is dropped down the "bottomless pit" at Carlsbad Caverns and strikes the ground with a…

A:

Q: If the 50-kg load A is hoisted by motor M so that the load has a constant velocity of 1.5 m/s,…

A:

Q: What is the kinetic energy of a 5 kg body if it travels at a velocity of 10 m/s?

A:

Q: Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

A: The calculated kinetic energy of stone and height from which stone was dropped in ft.

Q: 3. If a lift having a total mass of 1.4t travels a vertical distance from the ground to the sixth…

A: Assuming the lift is moving with constant velocity

Q: a capsule attached to a line is being rotated in a vertical loop of radius of 15 meters determine:…

A: Given: r = 15 m and vertical circular motion

Q: We will assume that you have 450 kg of fuel I = 320 seconds for this rocket  Using the information…

A: Specific impulse ( Isp) is a measure of how efficiently a reaction mass engine creates thrust. For…

Q: Determine (a) the distance traveled by the car and the trailer before they come to a stop and (b)…

A:

Q: the P platform is located on a spring and is tied to the ground with lines so that they cause the…

A: The initial length of the spring is 1 m and now the length of spring is 0.4 m. So, the compression…

Q: The power transmitted by a belt drive is proportional to the Tension as follows P = Tv _wv² Find…

A: Given    P = Power    g = Gravity    v = Velocity Find   Expression for velocity

Q: Flywheel serves as a reservoir to store and restore energy by virtue of its momentum. Select one:…

A: Function Of Flywheel

Q: A car m = 200 tons makes the journey shown in the figure, if it moves with an initial speed of…

A: Based on diagram, trajectory is assumed to be an hemisphere with radius 15000 m. FBD:

Q: Escalator steps move with a constant speed of 0.6 m/s. If the steps are 125 mm high and 250 mm in…

A: Speed, v =0.6 m/s  Length, l=250 mm  Mass, m = 150 kg Number of steps, n = 32 Height, h = 125 mm…

Q: A 6.0-lb stroller resting on a horizontal floor is pulled by a 85-lb boy with a constant force of…

A: Write the given data. Weight of stroller, ms=6 lbWeight of boy, mb=85 lbForce, F=75 lb

Q: A 10-kg mass is attached to a spring, stretching it 0.7 m from its natural length. The mass is…

A:

Q: A box has a mass of 4 kg and is dropped from a certain height (h), it falls to the floor with a…

A: Kinetic energy of an object is defined as the energy possessed by the object by virtue of its…

Q: A 250-N(≈25-kg) cabinet is placed on a smooth surface. If a force of a 300 N is applied for 1 s,…

A:

Q: A concrete weight of 125 kg is released from rest and a log of mass of 200 kg is moved along an…

A:

Q: etermine the work done on a 5.6kg ball attached to a cable and spun in a horizontal circle at a…

A: There is no such displacement and no external forces applied to it.

Q: Three different objects, all with different masses, are initially at rest at the bottom of a set of…

A: dear student please rate me postive :) Stay safe stay happy !   Data given - M1 = 4.00m M2 = 1.96…

Q: A helicopter with a mass of 10,000 kg takes off straight up at t=0. The thrust of the engine is…

A:

Q: block with a mass of m is dropped from a certain height. An undeformed spring with a spring constant…

A: Given:Spring constant, k=450 N/mDistance between the spring and the block, x=3 m

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.