A roofing shingle elevator is lifting a 25.0-kg package to the top of a building at constant speed. The angle between the elevator track and the horizontal is 75°. The power of the elevator is 900 W. Part A Determine the vertical component of the speed with which the package is moving up. Assume no friction is exerted by the incline surface on the package.

Question

In: Physics

A roofing shingle elevator is lifting a 25.0-kg package to the top of a building at constant speed.

A roofing shingle elevator is lifting a 25.0-kg package to the top of a building at constant speed. The angle between the elevator track and the horizontal is 75°. The power of the elevator is 900 W.

Part A

Determine the vertical component of the speed with which the package is moving up. Assume no friction is exerted by the incline surface on the package.

Expert Solution

genius_generous answered 2 years ago

A 1000-kg elevator is moving downwards in a skyscraper, with constant velocity. The elevator moves a...

A 1000-kg elevator is moving downwards in a skyscraper, with constant velocity. The elevator moves a total distance of 400 m. What is the work done on the elevator cage by the tension of the suspension cable? Take g=9.81 m/s2.

A 25.0-kg crate is initially at rest at the top of a ramp that is inclined...

A 25.0-kg crate is initially at rest at the top of a ramp that is inclined at an angle θ = 30.0 ◦ above the horizontal. You release the crate and it slides 1.25 m down the ramp before it hits a spring attached to the bottom of the ramp. The coefficient of kinetic friction between the crate and the ramp is 0.400 and the constant of the spring is k = 5000 N/m. How far does the crate compress...

A person with mass m= 70 kg takes the elevator to the top of the Empire...

A person with mass m= 70 kg takes the elevator to the top of the Empire State Building at a height of 300 m. Assum the elevator takes 1 min to reach the top of the building (a) Find the work done on the person by gravity during the elevator ride? (b) Find the amount of work the normal force of the floor did on the person. (c) Find the average power of the force of gravity.

An elevator system in a tall building consists of a 800-kg car and a 950-kg counterweight...

An elevator system in a tall building consists of a 800-kg car and a 950-kg counterweight joined by a light cable of constant length that passes over a pulley of mass 280 kg. The pulley, called a sheave, is a solid cylinder of radius 0.700 m turning on a horizontal axle. The cable does not slip on the sheave. A number n of people, each of mass 80.0 kg, are riding in the elevator car, moving upward at 3.00 m/s...

Q2) In a roofless elevator, which rises vertically at the constant speed of 2m / s,...

Q2) In a roofless elevator, which rises vertically at the constant speed of 2m / s, a stone is thrown upward at the initial speed of 17.6 m / s relative to it. calculate what the elevator has gone up when the bass falls again in it. step by step plis

In the worst-case scenario, you've got an elevator with a mass 2420 kg moving a speed...

In the worst-case scenario, you've got an elevator with a mass 2420 kg moving a speed 4.29 m/s when it reaches the bottom of the shaft. Your first idea is to put a spring, with spring constant 1.068×104 N/m, at the bottom of the shaft. a)Assuming the spring obeys Hooke's Law perfectly, how far will it compress to stop the elevator? b)When the elevator comes to a stop with the spring compressed, what is the net force on the elevator?...

A UPS worker places a 5.00 kg package at the top of a smooth ramp 2.60...

A UPS worker places a 5.00 kg package at the top of a smooth ramp 2.60 m above the horizontal and gives the package an initial velocity of 4.25 m/s as it slides down the ramp. After it reaches to the bottom of the packaging ramp, the box slides across a smooth floor until it compresses a spring with a stiffness of 3830 N/m. a) How much will the spring be compressed before the block comes to a stop? b)...

As your bus rounds a flat curve at constant speed, a package with mass 0.300kg ,...

As your bus rounds a flat curve at constant speed, a package with mass 0.300kg , suspended from the luggage compartment of the bus by a string 50.0cm long, is found to hang at rest relative to the bus, with the string making an angle of 30.0? with the vertical. In this position, the package is 40.0mfrom the center of curvature of the curve. What is the speed of the bus?

A high-speed lifting mechanism supports a 710 kg object with a steel cable 20.0 m long...

A high-speed lifting mechanism supports a 710 kg object with a steel cable 20.0 m long and 4.00 cm2 in cross-sectional area. (a) Determine the elongation of the cable. _____ mm (b) By what additional amount does the cable increase in length if the object is accelerated upward at a rate of 2.6 m/s2? _____ mm (c) What is the greatest mass that can be accelerated upward at 2.6 m/s2 if the stress in the cable is not to exceed...

A 1325 kg elevator starts from rest and moves upwards for 4 seconds with a constant...

A 1325 kg elevator starts from rest and moves upwards for 4 seconds with a constant acceleration until it reaches a speed of 2.1 m/s. After 4 seconds, the speed of the elevator remains constant. A) What is the average power of the elevator motor during the first 4 seconds? B) What is the average power of the elevator when t=9 seconds?