0
Yes. If force is negative, then work will be negative.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
When you say work is done against a force you mean the force does?
Negative work
What is the sign of the work done by the frictional force?
Negative
What can be said about a situation in which work done is negative?
the formula F.S cos angle is used (the dot product) so if angle is 0,cos angle=1 hence work done is positive and maximum if angle is 90 so cos 90 is 0 hence work done is minimum if work done is negative the angle is 180 The work done by friction is always negative (opposite the force) Since work is force x displacement, a negative value for work could mean that the displacent was negative
In the force has a component in the opposite direction from the motion the work done is negative?
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
What is the difference between negative work and zero work and positive work done?
If the angle between the displacement and force applied is less than a right angle, then it is Positive Work done. If the angle between the displacement and the force applied is greater than a right angle then it is Negative Work done. If the displacement and force are at right angles, or either is zero, then it is Zero Work done.
Explain why the work done of sliding friction is negative when an object undergoes a dispalcement on a rough surface?
Work is done when a force is applied over a distance. If the force acts opposite the direction of motion, like friction, then the work is negative.
What force allows work to be done?
Any force can produce work if it causes displacement. If displacement is in opposite direction of force, work done will be negative and if displacement is in direction of force work done will be positive. If there is no displacement, work done is zero. Eg: Gravitational force pulls you down towards earth, in pulling you down it does work on you which gets stored in form of potential energy. Energy for A+
Why is going downstairs negative work?
As you walk down the stairs, you apply a force to keep yourself from falling down the stairs. The force is in the upward direction, but your movement is in the downward direction. If the force is in the opposite direction of motion, work done by the force is negative. Gravitational force, because it pulls down, does positive work.
How much work is done by the gravitational force when a 256 kg pile driver falls 2.80m?
work is not by the force . work is done by the body against or for the force. since work is force x displacement it will be 265x2.40 =636 N .and since work is done for the gravity work done will be -ve so it will be -636 N .
When the force acting on an objects points at least partially in the blank direction of the motion the work done is considered to be what?
Positive work is work done in the direction of motion, while negative work is work done in the opposite direction from the motion.opposite
When a force is applied on a moving bodyits motion is retardedThen the work done is?
By Definition of force work = force X displacement since the force depends upon the displacement which can either +ve, -ve or zero so if any object is retarding mean there can be many possibilities 1. if the force is applied opposite to the direction of object then the work done is negative. 2. if the force is on same direction then the work done is positive. in both the cases the displacement will be positive THIS KIND OF FORCE IS CALLED RETARDED FORCE
How do you determine a work done is positive sign or negative sign?
If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.
