The mechanical energy of an object must change if: The object's kinetic energy is changing There...
The mechanical energy of an object must change if:
|
The object's kinetic energy is changing |
||
|
There is a net non-conservative force acting on the object over some distance |
||
|
More than one non-conservative forces are acting on the object |
||
|
All forces acting on the object are conservative |
||
|
The kinetic and potential energies of the object are changing in opposite ways |
Homework Answers
There is a net non-conservative force acting on the object over some distance
A good example is, when kinetic friction acts on a body for some distance the kinetic energy of the body decreases. so, mechanical energy is decreased.
Add Answer to:
The mechanical energy of an object must change
if:
The object's kinetic energy is changing
There...
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...
A) Give a general expression for the work done by two forces acting on an object...
A) Give a general expression for the work done by two forces acting on an object (F1 and F2 vectors) as it moves along a trajectory. F1 is conservative, and F2 is dissipative. Your expression should include terms of kinetic and potential energies, if any, indexed during the forces. B) Define the Total Mechanical Energy C) How does it change?
The potential energy of an object decreases by 10J. What is the change in the object's...
The potential energy of an object decreases by 10J. What is the change in the object's kinetic energy, assuming there is no friction in the system?
In travelling a distance of 0.5m, an object gained 200 Joules of kinetic energy. What work...
In travelling a distance of 0.5m, an object gained 200 Joules of kinetic energy. What work was done on the object, assuming no frictional forces acted? What was the average forces acting on the object? If a force of 600N had acted over the same distance, what would have been the gain in kinetic energy?
The work-energy theorem applies to changes in kinetic energy because.... a- forces applied over a distance...
The work-energy theorem applies to changes in kinetic energy because.... a- forces applied over a distance change the position, therefore the object has some velocity, which implies kinetic energy. b- forces applied over a distance change the position, therefore the object has some acceleration, which implies kinetic energy. c- forces are a part of kinetic energy. d- forces applied over a distance change nothing about the system so we have to study kinetic energy.
1) Which term best describes an object's resistance to a change in motion A) Force B)...
1) Which term best describes an object's resistance to a change in motion A) Force B) Inertia C) Acceleration D) Resistance 2) Two skaters, Cathy and Mike, are standing on a frozen pond. Mike has twice the mass as Cathy. If Mike pushes to the left on Cathy, what can be said about the forces and accelerations on each person? A) Cathy experiences a force and acceleration to the left, while Mike experiences an equal force in the opposite direction....
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic...
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
From the Work/Energy theorem, the change in kinetic energy of an object ("particle") is equal to...
From the Work/Energy theorem, the change in kinetic energy of an object ("particle") is equal to t work done on the object by all external forces: Assuming that the cart starts from rest, (w 0). find an equation for the speed of the cart v as as function of the net work on the cart W and cart mass M. (Note: requires Adobe Flash Player.) Which of the curves on the graph at left could represent the Velocity of the...
An object can possess kinetic energy, the energy of motion, and/or potential energy, the energy of...
An object can possess kinetic energy, the energy of motion, and/or potential energy, the energy of position. Energy can be transferred in many ways, one of which is in the form of work. Work, w, is the energy transferred when an object is caused to move a distance, d, against a force, F. Mathematically, we would write this as w=Fd Force is the product of mass, m, and acceleration, a: F=ma When the acceleration is due to gravity, the symbol...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation on the previous genith Y replacing and find the work done by this force df w is the work done by the gravitational for moves away from t he gravitational force positive, negative, or zero when an object in the Earth? When it moves toward the Earth? When it orbits the Earth in a circle? Part B: Conservative and Non-conservative Forces welop and understorence...
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...
1) Which term best describes an object's resistance to a change in motion A) Force B) Inertia C) Acceleration D) Resistance 2) Two skaters, Cathy and Mike, are standing on a frozen pond. Mike has twice the mass as Cathy. If Mike pushes to the left on Cathy, what can be said about the forces and accelerations on each person? A) Cathy experiences a force and acceleration to the left, while Mike experiences an equal force in the opposite direction....
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
From the Work/Energy theorem, the change in kinetic energy of an object ("particle") is equal to t work done on the object by all external forces: Assuming that the cart starts from rest, (w 0). find an equation for the speed of the cart v as as function of the net work on the cart W and cart mass M. (Note: requires Adobe Flash Player.) Which of the curves on the graph at left could represent the Velocity of the...
Work Done by the Govtational Force bute the gravitational force G m./r into the integral equation on the previous genith Y replacing and find the work done by this force df w is the work done by the gravitational for moves away from t he gravitational force positive, negative, or zero when an object in the Earth? When it moves toward the Earth? When it orbits the Earth in a circle? Part B: Conservative and Non-conservative Forces welop and understorence...
Most questions answered within 3 hours.
-
Assume that the readings at freezing on a batch of thermometers
are normally distributed with a...
asked 1 minute ago -
MENSA Int'l just paid a dividend of $1.25. Their growth rate in
dividends is 10% and...
asked 48 seconds ago -
4. The excitation of a 414 V, 3-phase, delta-connected
synchronous motor is such that that the...
asked 17 minutes ago -
3. (20 pts) In the Carnot engine (refer to the figure in
question 2), an ideal...
asked 24 minutes ago -
A contestant is facing 10 closed doors. Behind one of these
doors there is a prize....
asked 26 minutes ago -
Showing appropriate work and equations, what is the yield to
maturity on a share of Six...
asked 41 minutes ago -
what would be the best entry mode in shipping from the U.S to Spain
by boat...
asked 45 minutes ago -
Under certain conditions, the substance ammonium
nitrate can be broken down to form dinitrogen
monoxide and...
asked 47 minutes ago -
1. A boy stands on one end of a boat, and then walks to the
other...
asked 57 minutes ago -
Casey is on trial under criminal allegations that she engaged in
fraudulent behavior at the company...
asked 1 hour ago -
Surplus Styles is a manufacturer of hair care products,
including shampoos, conditioners, and hair gels. The...
asked 1 hour ago -
Using an income-expenditure diagram, use the infinite line and
double-drop line tools to show the economy...
asked 1 hour ago