A 65kg bicyclist (including the bicycle), initially at rest at the top of a hill, coasts down the hill, reaching a speed of 15.5m/s at the bottom of the hill. The distance and height of the hill are shown. Neglect any friction impeding the motion and the rotational energy of the wheels. List the energy types at the initial and final time and whether work and loss (due to non-conservative forces) occur as well as the 60m 19m corresponding amounts of energy. reference level initial: GPE work? Nowore = %3D Loss 3= loss? final: KE ) = What was the strength of the drag? N.

A 65kg bicyclist (including the bicycle), initially at rest at the top of a hill, coasts down the hill, reaching a speed of 15.5m/s at the bottom of the hill. The distance and height of the hill are shown. Neglect any friction impeding the motion and the rotational energy of the wheels. List the energy types at the initial and final time and whether work and loss (due to non-conservative forces) occur as well as the 60m 19m corresponding amounts of energy. reference level initial: GPE work? Nowore = %3D Loss 3= loss? final: KE ) = What was the strength of the drag? N.

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

See similar textbooks

Similar questions

In the system shown, a spring is compressed and pushes a mass of 50Kg down the path shown with two different slopes. If the spring has a constant of 25 kN / m, what would have to be the deflection of the spring for the block to reach the limit at 2 m / s? The coefficient of kinetic friction is 0.15 and assume that starting from rest to make the ideal system
Problem: A person on a bicycle of mass 85 kg ( including the bicycle) can slow down at velocity of 3.60m/s? safely without skidding when approaching the next stop on the road. a. Draw the free-body diagram, including all the forces that apply to the problem. b. How would the free body diagram look on the person one the bike if the road was inclined uphill at 18 degrees? How would its deceleration change if the road was increased to 18 degrees? c. If the bieyelist elimbs up the hill at a speed of 8.0km/h because of the air resistance. What force would be necessary to climb the hill at the same speed with the same air resistance?
An aeroplane required for take off speed of 80 km/h, the run onthe ground being 100m. The mass of the aeroplane is 10000 kgand coefficient of friction between the plane and ground is 0.2.Assume that the plane accelerates uniformly during the take off.What is the maximum force required by the engine of the plane fortake off.
A block weighing 200N rests on a horizontal floor. A horizontal force P=100N directed to the right is applied to the bloxk and it reaches a velocity of 12m/sec in 40 m distance starting from rest. What is the coefficient of friction between the block and the floor?
A string is wound around a pulley of diameter of 0.2 m. One of its ends is tied to the pulley and the other end to a weight hanging freely. The weight falls a distance of 4 m from the rest in 3 s. Determine the total distance through which the weight should fall so that the velocity of the pulley will be 400 rpm. OPTIONS: 1.Around 10 m 2.Around 15 m 3.Around 12 m 4.Around 6 m 5.Around 8 m 6.None
Q3 The external net force component along the displacement of 25kg box varies with the magnitude of the displacement is represented in the graph shown in Figure Q3 be. Find: (a) the work done on the box by the net force. (b) the speed of the box at the following position, given that the box initially at rest. (i) 6 meters (ii) 11 meters (c) the coefficient of kinetic friction between the box and the floor when it is between 4 to 5 meter displacement. Applied Force Vs. Displacement 10 8 2 1 2 3 4 5 6 7 8 10 11 Displacement (m) Figure Q3 Applied Force (N)
Solve with paper and pencil, scan your solution, and submit online. 15° A person pulls themself up a 0 = 15° incline by the method shown. The combined mass of the person and cart is m = 100 kg, and starting from rest they pull the rope with a force of P = 250 N. Neglect all friction and the mass of the pulleys and wheels. (a) Find the acceleration of the person and cart. (b) How fast is it moving after it has traveled 1 m ?
A 60 kg block slides along the top of a 100 kg block with an acceleration of 2.0 m/s? when a horizontal force F of 340 N is applied. The 100 kg block sits on a horizontal frictionless surface, but there is friction between the two blocks. 100kg (a) Find the coefficient of kinetic friction between the blocks. (b) Find the acceleration of the 100 kg block during the time that the 60 kg block remains in contact. m/s2 eBook
A brake test for an automobile is conducted. During the brake test, the automobile of mass 1800 kg (including driver) is travelling at the speed of 110 km/hr as it passes point A, and the car descends a hill of 1in 2 (Sine). The driver applies brakes so as to bring the car speed at B to 50 km/hr. The total frictional resistance to motion is 235 N. Using Work-Energy Method, Calculate the following required to bring the car to 50 km/hr from 110 km/hr in 210 m (From Point A to Point B) B Determine the Value of Total Energy about Point A TE= Determine the Value of Total Energy about Point B TEb= Determine the Value of Breaking Force needed Fb= N A
A child on a sled starts from rest at the top of a 15° slope. If the trip to the bottom takes 15.3 s how long is the slope? Assume that frictional forces may be neglected.
A jogger with mass m = 55 kg uses energy at a rate of P = 802 W when she jogs on horizontal ground at a constant speed of s = 3.5 m/s. The efficiency of her “human engine” however, is e = 0.27. (In other words, the power used for locomotion is e = 0.27 times the total power.) Q) Write an expression for the rate of energy expenditure whenshe jogs at the same constant speed up a slope of 4.99 degrees. Assume whatever frictional or drag forces are the same in each case. Your answer should be in terms of the symbols given in the problem statement and g(9.80 m/s^2)
. A body falls freely from rest for time T. Develop an equation for velocity