1. Joe is moving his refrigerator to take to college and hebegins by pushing it across the wooden kitchen floor.On a flat surface like the floor, how do you calculate how hardhe needs to push? Draw a free body diagram (on paper) to helpexplain your answer and use the simulation Ramp: Force andMotion to check your ideas. Record the minimum force Joewould have to use to move the refrigerator on the kitchen floor.2. Later, Joe is ready to load his refrigerator onto the movingtruck.a. Explain how he would calculate how much force to use to liftthe refrigerator straight up into a truck.b. Joe starts thinking about easier ways to get it in the truck andremembers he has some wood that he could use to make aramp. How could he calculate the minimum force needed topush it up the ramp?10.0°c. Use the simulation to check your ideas by runningexperiments with different objects at several angles. Make adata table including several trials with the calculations.

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Answered: 1. Joe is moving his refrigerator to…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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3. An athlete pushes against an exercise machine with a force that varies with time according to F(1) = 1200 N (1 – kf), where k = 8 s? Also, the velocity of the athlete's legs acting in the same direction as the force acts according to v(t) = 7 m/s² t a. Create a computer generated plot of the power as a function of time. b. Find the maximum power the athlete generates and the time at which maximum power is generated.
Joe takes his little brother Andy down the the playground for an afternoon out. Andy would like to ride the seesaw, but the difference in their sizes, Joe weights 160lbs and Andy weighs 641lbs, makes this difficult. Joe sees a solution from his engineering class and moves the fulcrum from the middle to a new place. The seesaw is 3.5m long. After Joe moved the fulcrum how long was the seesaw on Joe's side?
Problem 21.2 A closed system of mass 5 lbm undergoes a process in which there is a heat transfer of 200 ft·lbf from the system to the surrounding. There is no work during the process. The velocity of the system increases from 10 ft/s to 50 ft/s, and the elevation decreases by 150 ft. The acceleration of gravity at this particular geographical location is 32.0 ft/s². Please sketch your system and show all of your work to determine the change in a) kinetic energy of the system, in ft·lbf, b) gravitational potential energy of the system, in ft·lbf, and c) internal energy of the system, in ft·lbf and Btu. Partial Ans: c) 300 < AU <400 ft·lbf
A winch mechanism with a handle length of 30 cm and a drum diameter of 8 cm isused to lift a 45 kg load.a. What is the VR of the winch?b. If 73.5 N of force is required to lift the load, what is the MA?c. What is the mechanical efficiency of the winch?d. How many turns will be required to lift the weight 0.85 meters?
4. Pick three different whole numbers of ounces of beverage for Alice to drink and find her height after consuming each amount. Assume in each case that she starts out 5 feet tall.
Question 2 You want to move a hay bale to the top of a hill using a forklift. Find the minimum tractive force, P, between the tires and the ground that is required to move the hay bale. The mass of the bale is 1200 kg. Assume u, = 0.4 between the bale and the ground and between the bale and the vertical forklift platform. 30° P = 22.1 kN
You need to push a cupboard by applying a horizontal force F on its side. The cupboard width is L, height is H and mass is m. You are applying the force at a point that is a height h above the floor. The coefficient of kinetic friction between the dresser and the floor is u. The ground exerts upward normal forces of magnitudes Np and No at the two ends of the dresser. a) How much force do you need to apply for the cupboard to move with constant velocity? b) What are the magnitudes of normal forces Np and Na if the cupboard legs are separated by a distance L? c) What is the maximum height h where you can push the cupboard before it tips over? F H Pl Np N.
1. You are setting up for a pool party that has a 2.5 m high slide that launches swimmers into the pool. To make it more exciting, you decide to string a steamer across the pool so that the swimmers just clear it at their maximum height after leaving the slide. The end of the slide is 0.75 m above the ground and is directed 20° above the horizontal. By watching people use the slide, you know the horizontal distance to place the streamer, so you only need to determine the maximum height. You are also curious how fast the swimmers are going when they enter the pool. In your estimates, you can assume that the swimmer starts at rest at the top of the slide and ignore friction on the slide and air resistance. 2.5 m 0.75 m streamer If the angle of the slide were different (say 15°) would either the maximum height or the speed when entering the water be different? Note: Use conservation of energy to answer these questions.
4. A meter stick has a pivot that is located at (35 cm). On this meter stick we place 200 g @ 20 cm, 200 g @ 25 cm, 350 g @70 cm and 100 g @80 cm. The meter stick has a mass of 150 g. a. How much mass needs to be placed at 55 cm in order to balance the meter stick. b. Where will you put 500 g in order to balance the meter stick?
Please don't copy wrong solution ,Strictly use paper sheet to solve. Mechanical engineering: Thermodynamics. Q1:- A vertical hydraulic cylinder has a 125-mm diameter piston with hydraulic fluid inside the cylinder and an ambient pressure of 1 bar. Assuming standard gravity, find the piston mass that will create a pressure inside of 1500 kPa.

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