Table of Contents
Is work done independent of velocity?
So, the work is independent of velocity or force. According to Newton’s second law force is a product of mass and acceleration. Acceleration means rate of change of velocity.
Does work relate to velocity?
In physics, you perform work when you apply force to an object and move it over a distance. When you perform work, it generates kinetic energy. The mass and velocity of an object impact how much kinetic energy it has. Equating work and kinetic energy allows you to determine velocity from force and distance.
What does the work you do depend on?
The amount of work done on an object depends on the amount of force exerted on the object and the amount of distance the object moves. According to Newton’s Second Law of Motion, the net force on an object is dependent on the mass of the object, and its acceleration during the movement.
Does the work done depend upon how fast and object is raised?
No, the work done does not depend on how fast an object is raised up. For the constant value of m and g, the work depends on height upto which it is raised. Power is the physical quantity which is defined as the rate of doing work i.e. and, t=time taken.
Does the work done in lifting an object depends on how fast it is lifted?
No. Work is independent of time. Power is dependent on time, so lifting it faster would require more power.
When a body is lifted the work done by the gravitational force is positive?
(i) Positive work: when the force acting on the object is in the direction of displacement, then work done by a force is positive. Examples: (i) When a body falls freely under gravity (θ = 0°), the work done by the force of gravity is positive.
How do you find work done by velocity?
Section Summary
- The net work Wnet is the work done by the net force acting on an object.
- Work done on an object transfers energy to the object.
- The translational kinetic energy of an object of mass m moving at speed v is KE=12mv2 KE = 1 2 m v 2 .
What are the necessary factors on which work depends?
Work done depends on factors mentioned below.
- The magnitude of the applied force.
- The magnitude of the displacement of the given body.
- Cosine of the angle between the line of action of force and that of displacement.
What is work done if there is no change in velocity?
Government of Tamilnadu, lndia. Work done depend upon the change in velocity of the body. If there is no change in velocity , ( constant velocity), no work is done either on the body or by the body. Any object moves with constant velocity, only when the net force acting on the body is zero.
Is there work done by or on the body?
In conclusion , there is work done on or by a body , only when there is change in velocity. If the velocity is decreasing , work is done by the body and if the velocity is increasing work is done on the body. No change in velocity implies , no work is done by or on the body.
What is the work done by an object with constant velocity?
Work done depend upon the change in velocity of the body. If there is no change in velocity , ( constant velocity), no work is done either on the body or by the body. Any object moves with constant velocity, only when the net force acting on the body is zero. Work is force * displacement.
Is work independent of velocity and force?
So, the work is independent of velocity or force. According to Newton’s second law force is a product of mass and acceleration. Acceleration means rate of change of velocity. Yes the work depends on the velocity as pointed out in other answer not directly but consider what happens when you throw a pebble vertically upwards.
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