What is the expression for work done by a force?

What is the expression for work done by a force?

Work done by applying force F is the product of the force applied on the body and distance moved by the body in the direction of force, work done = Force x distance moved in the direction of the force.

What is the work done by the force on the object?

Work is equivalent to the change in kinetic energy of a system. Distance is not the same as displacement. If a box is moved 3 meters forward and then 4 meters to the left, the total displacement is 5 meters, not 7 meters.

What is the expression of the work done?

To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd. If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.

What is work write the expression for work done by a constant force and by a variable force?

Key Points. The work done by a constant force of magnitude F on a point that moves a displacement d in the direction of the force is the product: W = Fd. Integration approach can be used both to calculate work done by a variable force and work done by a constant force.

What is the expression for the work done when a force is acting on an object in the direction of its displacement?

W = F x s. Q2. Write an expression for the work done when a force is acting on an object in the direction of its displacement. Work done is equal to the product of the force and displacement.

How do you find work done by a force?

Work can be calculated with this equation: Work = Force x Distance. The SI unit for work is the Newton meter (N m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.

What is work done short answer?

Work done by a force acting on an object is equal to the magnitude of the force multiplied by the distance moved in the direction of the force. We define work to be equal to the product of the force and the displacement. Work done = force × displacement. W = F × s.

How do you calculate work done by a constant force?

The work W done on an object by a constant force is defined as W = F·d. It is equal to the magnitude of the force, multiplied by the distance the object moves in the direction of the force.

What is work done class 9th?

Class IX Science Work Done. • Work done on an object is defined as the magnitude of the force multiplied by the distance moved by the object in the direction of the applied force. Work done = force × distance.

How to write an expression for work done by a force?

Question 3. Write an expression for the work done when a force is acting on an object in the direction of its displacement. If F is the constant force acting in the direction of displacement s, then work done by the force, W = F × s = Fs.

When is work done by a force on an object?

Work is done by a force on an object if a force acts on the object and the object is displaced from its original position. Question 3. Write an expression for the work done when a force is acting on an object in the direction of its displacement.

Is the work done by a force positive or negative?

The work done by a force on an object can be positive, negative, or zero, depending upon the direction of displacement of the object with respect to the force.

When is work done by force and momentum?

Momentum helps explain some of the most important interactions in nature. Work is done when energy is transferred from one store to another. Work is also done when a force causes an object to move. When work is done against frictional forces acting on an object, the object’s temperature increases.