An object 5 m off the ground has a mass of 22 kg . If it...
An object 5 m off the ground has a mass of 22 kg . If it has a gravitation potential energy of 800J, what is the gravitational acceleration of the planet? Kinematics, Conservation of Energy, Kinematics Energy or Gravitational Potential Ennergy?
A kart has a KE of 210J. If friction does -80J of work on it, how much KE does the kart have after friction acts on it? And how do you determine the KE? Kinematics, kinetic energy, work-energy theorem, or forces?
Homework Answers
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#13) multi-question. Provided useful equations. Question 13 [8] A baseball player slides to 3rd base. A...
#13) multi-question. Provided useful equations.
Question 13 [8] A baseball player slides to 3rd base. A friction force (1) acts against his motion as indicated in the figure. He needs to slide a distance d of 2.5 m to be safe. (a) Use the work-energy theorem with non-conservative forces to write down an equation to find the actual distance the player slides. (b) If he starts sliding with an initial velocity of 5.0 m/s and the coefficient of kinetic friction...
Show your all steps for full credit Answer all questions: 1. An object of mass 1kg...
Show your all steps for full credit Answer all questions: 1. An object of mass 1kg is at rest at B at a height of 10m above the ground. 6m Ground: h-0m The object is dropped from B and it touches the ground at A. Using energy conservation principle, neglecting the air resistance or friction forces, (Take g as 9.8 m/s) Calculate a) the potential energy at B b) the kinetic energy at B. c) the mechanical energy at B...
PS-5 Written Problems (50 points) - Tutorial: Conservation of energy with energy bar charts Name Work...
PS-5 Written Problems (50 points) - Tutorial: Conservation of energy with energy bar charts Name Work done by a constant force: W = .d = Fd cose W = Fparalleld Helpful Equations: mgh = U,Gravitational potential energy kx? = Us - Elastic potential energy mv2 = KE - Kinetic Energy 1. Using energy bar charts for conservation of energy problems Bar charts are conceptual tools that represent conservation of energy. • A vertical bar is used to represent the amount...
An object of mass m = 1.70 kg is travelling on a horizontal surface. The coefficient...
An object of mass m = 1.70 kg is travelling on a horizontal surface. The coefficient of kinetic friction between the object and the surface is muk = 0.200. The object has speed v = 1 .35 m/s when it reaches x = 0 and encounters a spring. The object compresses the spring a distance d/2, stops instantaneously, and then travels back to x = 0 where it stops completely. Eventually you will be asked to find the spring constant,...
P4. Use CONSERVATION OF ENERGY to determine how HIGH a projectile of mass m goes if...
P4. Use CONSERVATION OF ENERGY to determine how HIGH a projectile of mass m goes if STARTED with VELOCITY v0at angle q with respect to the ground. Please give all your answers below in terms of v0, q, m, and g .a) What is the KINETIC ENERGY at the start? b) What is the KINETIC ENERGY at the HIGHEST point of its flight? c) What is the GRAVITATIONAL POTENTIAL ENERGY at the start? d) What is the GRAVITATION POTENTIAL ENERGY...
1-4 using Work-Energy Theorem/KE and PE thank you! not 1. An object of mass 0.5kg is...
1-4
using Work-Energy Theorem/KE and PE
thank you!
not 1. An object of mass 0.5kg is projected from ground at 40m/s. Find the work done by gravity on the object, when it is at (a) 10m above the ground -49 Joules (b) 15m above the ground.- 73.5 Joules (c) Find the potential energy of the object in (a) and (b) relative to the ground. PE-mgh 49 J/73.55 2. A block of is sliding down a slope as shown in the...
Use g = 9.8 m/s? Block A (mass 40 kg) and block B (mass 80 kg)...
Use g = 9.8 m/s? Block A (mass 40 kg) and block B (mass 80 kg) are connected by a string of negligible mass as shown in the figure. The pulley is frictionless and has a negligible mass. If the coefficient of kinetic friction between block A and the incline is k = 0.21 and the blocks are released from rest, determine the change in the kinetic energy of block A as it moves from C to D, a distance...
The object below, with mass M is pulled in the horizontal direction over a flat surface...
The object below, with mass M is pulled in the horizontal
direction over a flat surface for a distance d, whose coefficient
of friction is uk.
2. The object below, with mass Mis pulled in the horizontal direction over a flat surface for a distance d, whose coefficient offriction is HK a. (5 points What is the total work done by friction? b. (5 points What is the change in thermal energy? 3. (5 points If both conservative forces and...
#8 2. Consider the force F shown in the drawing. This force acts on an object...
#8
2. Consider the force F shown in the drawing. This force acts on an object that can move along the F positive or negative x axis, or along the positive or negative y axis. The work done by this force is positive when the displacement of the object is along the axis: (a)-x, -y (b)-x, +y (c) +x, +y circular pat What enabl is above po by the tens energy gravitation axis or along the Section 6 and the...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. F is 21.6 N acting due east, F2 is 28.6 N acting due north, F3 is 43.5 N acting due west, and Fl is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 22.0 kg? total work done on object: Which type of energy is changing for...
#13) multi-question. Provided useful equations.
Question 13 [8] A baseball player slides to 3rd base. A friction force (1) acts against his motion as indicated in the figure. He needs to slide a distance d of 2.5 m to be safe. (a) Use the work-energy theorem with non-conservative forces to write down an equation to find the actual distance the player slides. (b) If he starts sliding with an initial velocity of 5.0 m/s and the coefficient of kinetic friction...
Show your all steps for full credit Answer all questions: 1. An object of mass 1kg is at rest at B at a height of 10m above the ground. 6m Ground: h-0m The object is dropped from B and it touches the ground at A. Using energy conservation principle, neglecting the air resistance or friction forces, (Take g as 9.8 m/s) Calculate a) the potential energy at B b) the kinetic energy at B. c) the mechanical energy at B...
PS-5 Written Problems (50 points) - Tutorial: Conservation of energy with energy bar charts Name Work done by a constant force: W = .d = Fd cose W = Fparalleld Helpful Equations: mgh = U,Gravitational potential energy kx? = Us - Elastic potential energy mv2 = KE - Kinetic Energy 1. Using energy bar charts for conservation of energy problems Bar charts are conceptual tools that represent conservation of energy. • A vertical bar is used to represent the amount...
An object of mass m = 1.70 kg is travelling on a horizontal surface. The coefficient of kinetic friction between the object and the surface is muk = 0.200. The object has speed v = 1 .35 m/s when it reaches x = 0 and encounters a spring. The object compresses the spring a distance d/2, stops instantaneously, and then travels back to x = 0 where it stops completely. Eventually you will be asked to find the spring constant,...
1-4
using Work-Energy Theorem/KE and PE
thank you!
not 1. An object of mass 0.5kg is projected from ground at 40m/s. Find the work done by gravity on the object, when it is at (a) 10m above the ground -49 Joules (b) 15m above the ground.- 73.5 Joules (c) Find the potential energy of the object in (a) and (b) relative to the ground. PE-mgh 49 J/73.55 2. A block of is sliding down a slope as shown in the...
Use g = 9.8 m/s? Block A (mass 40 kg) and block B (mass 80 kg) are connected by a string of negligible mass as shown in the figure. The pulley is frictionless and has a negligible mass. If the coefficient of kinetic friction between block A and the incline is k = 0.21 and the blocks are released from rest, determine the change in the kinetic energy of block A as it moves from C to D, a distance...
The object below, with mass M is pulled in the horizontal
direction over a flat surface for a distance d, whose coefficient
of friction is uk.
2. The object below, with mass Mis pulled in the horizontal direction over a flat surface for a distance d, whose coefficient offriction is HK a. (5 points What is the total work done by friction? b. (5 points What is the change in thermal energy? 3. (5 points If both conservative forces and...
#8
2. Consider the force F shown in the drawing. This force acts on an object that can move along the F positive or negative x axis, or along the positive or negative y axis. The work done by this force is positive when the displacement of the object is along the axis: (a)-x, -y (b)-x, +y (c) +x, +y circular pat What enabl is above po by the tens energy gravitation axis or along the Section 6 and the...
An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. F is 21.6 N acting due east, F2 is 28.6 N acting due north, F3 is 43.5 N acting due west, and Fl is 10.8 N acting due south. How much total work is done on the object in 2.22 s, if it has a mass of 22.0 kg? total work done on object: Which type of energy is changing for...
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