A 10 ft. pole weighs 30 Ibs. (of force, to be clear). It lies flat on the ground. You lift one end of the pole until it stands vertically, the other end of the pole has been braced to the ground while you lift the other end up. Once the pole is upright, the segment of length Ax at height x has been raised a vertical distance of x feet. How much work is done to raise the pole vertically?

A 10 ft. pole weighs 30 Ibs. (of force, to be clear). It lies flat on the ground. You lift one end of the pole until it stands vertically, the other end of the pole has been braced to the ground while you lift the other end up. Once the pole is upright, the segment of length Ax at height x has been raised a vertical distance of x feet. How much work is done to raise the pole vertically?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A concrete block is pulled 8.0 m across a frictionless surface by means of a rope. The tension in the rope is 40 N; and the net work done on the block is 247 J. What angle does the rope make with the horizontal?
While riding on an elevator, a person has twoforces acting on him, a normal force and a gravity force. Suppose the person has mass m is on an elevator that 1 descends a distance d. If the total work on the person is Wiotal = -mgd, what is 4 the magnitude of the normal force? Is the elevator speeding up or slowing down? The knowns in this problem are m and g.
A box with with a mass m = 2kg is being pushed up a ramp by an unknown pushing force Fp. The coefficient of static friction between the box and interface is 0.7. The coefficient of kinetic friction between the box and interface is 0.6. The incline of the ramp is 15 degrees. The velocity of the box is constant. The surface of the ramp is 12 m. What is the work done by normal force while the box is being pushed the entire length of the ramp? [ I think that it is 0 N, since the x component of normal force which is parallel to motion is 0. Is that correct?]
A pail and its contents weigh 80 lbs. The pail is attached to the end of a 100 ft rope that weighs 10 lb and is hanging vertically. How much work is done in winding up the rope with the pail attached? For this problem, set up the appropriate integral(s), and evaluate the integral(s). The integral(s) can be evaluated by a calculator.
A block of mass m is placed on a rough incline surface making an angle 0 = 27.5 with horizontal. A force F = 10.3 N parallel to the ground is applied to the block. Due to the applied force the block moved x = 1.33 meter along the inclined surface with constant speed. If the inclined surface has kinetic friction coefficient uk = 0.55 what is the work done by the gravitational force? Provide your answer with 2 decimal places. Take g = 9.81 m/s2 m HK
You are working at a factory. You put a carton (box) with a mass of 2.5 kg on a 1.5-m frictionless ramp inclined at 32.5O with respect to the horizontal. The carton slides down from the top of the ramp. What is the work done by the force exerted by the carton when it reaches the bottom of the ramp?
Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension force in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force on the box is 12.0 N. How much work is done on the box by the normal force, in Joule? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
A chain is held on a frictionless table with one fourth hanging over the edge. If the chain has a length of 57 cm and a mass of 0.020 kg, how much work is required to pull the hanging part back onto the table. Use g = 10 N/kg.
A man pushes a 85.9-N crate a distance of 3.7 m up a long frictionless ramp at a constant speed. His pushing force is parallel to the ramp. The ramp makes a 30.0-degree angle with the horizontal. What is the work done by the man in pushing the crate? Give your answer in joules, rounded to one decimal place.
A block of mass ?=0.350kg is released from rest, from a curved ramp of height h= 42.0 cm (point A in the figure). The block slides down frictionless to the bottom of the ramp to point B. a) What is work done by gravity when the block moves from A to B? b) What is the speed of the block at the bottom of the ramps (point B in the figure)? c) The box continuesto slide frictionless and compress a spring a distance Δ?=8.20cm until it stops at point C. What is the spring constant k of the spring? d)What is the elastic potential energy stored in the spring when the block is at point C?
A 600 N person climbs a ladder at a constant speed. The person climbs up 12 meters in a time of 20 seconds. What is the work done and the power exerted?
An object slides on an inclined plane that has a slope of 30 degrees. The height of one end of the inclined plane relative to the other end is 2.0 m. The mass of the object is 2.5 kg and the coefficient of kinetic friction between the object and the plane is 0.2. How much work is done by the force of gravity when an object moves from the top to the bottom of an inclined plane?