In which case below is work not being done?

Let us consider some cases where work is not done: Work is zero if applied force is zero (W=0 if F=0): If a block is moving on a smooth horizontal surface (frictionless), no work will be done. Note that the block may have large displacement but no work gets done. Work is zero if Cos θ is zero or θ = Π/2.

For which of the following cases is work not done on the specified object?

For which of the following cases is work NOT done on the specified object? The book is not moving (no displacement), so no work is done to the book. Energy enables an object to exert a force through a distance. If released, the compressed spring can exert a force through a distance and do work.

Under which condition is no work done quizlet?

Under what condition can a force act on an object and yet do no work on that object? If the object does not move/ does not go any distance than there is no work done.

On which object was the least amount of work done?

A ball hanging from a tall pole represents the least amount of work being done. Whenever a force is applied to an object, causing the object to move, work is done by the force.

How do you know if work is 0?

The work done by a force is zero if the displacement is either zero or perpendicular to the force. The work done is positive if the force and displacement have the same direction, and negative if they have opposite direction.

In which situation is no work done?

If the force is perpendicular to the direction of displacement, work done is zero. When the displacement opposite to the direction of force, work is negative.

What happens to the object on which work is done?

Work is basically a form of energy, so in general, when the work is done on an object it must result in a change of its energy. The simplest case is mechanical work: we could accelerate the object, or move it around in a gravitational or electric potential field—-but there are other forms of work that are less obvious.

In which of the following situations is no work done?

On smooth floor frictional force is zero,therefore work done is zero.

How do you calculate work done?

Work is done whenever a force moves something over a distance. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force.

When does work have to be done on an object?

A person (or other device) must do an amount of work given my W = mgh where h is the distance that the block is lifted. The gravitational field does the opposite amount of work since the force exerted on it is in the opposite direction of the displacement.

When is no net force necessary to keep something in motion?

If the box is being carried at constant velocity, then no net force is necessary to keep it in motion. The force exerted by the person is an upward force equal to the weight of the box, and that force is perpendicular to the motion. If there is no motion in the direction of the force, then no work in done by that force.

What is difference between work done and net work done on an object?

Where as, work done in an object is the dot product of the force applied on it and the distance it traverses due to that force applied in the according direction. Usually it’s in the direction of force applied. Here it does depend on the direction.

What happens when force is applied to an object?

When a force applied to an object causes the object to move in the direction of the force, the object acquires: a. energy. b. mechanical advantage. c. efficiency. d. friction. a. energy The simple machine that operates as a ramp that curves around a shaft is a: