Work done by retarding force is
Correct answer: B. Negative
- A. Positive
- B. Negative
- C. Zero
- D. None of these
Explanation
A retarding force opposes the motion of an object. Work done by a force is given by:W = F * d * cos θWhere:W = Work doneF = Forced = Displacementθ = Angle between force and displacementSince the retarding force acts opposite to the direction of motion, the angle between the force and displacement is 180 degrees. Therefore, cos 180° = -1. This makes the work done by a retarding force negative
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
Practise Work and Energy
748 free Work and Energy MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Work and Energy questions
Escape velocity of moon is
If a force of 1N acts on a body through a distance of 1m in the direction of force, how much work is done?
If the speed of an object is doubled, its Kinetic Energy will
An object of mass 2kg has a velocity of 6m/s. After 8 seconds, its velocity increases to 10m/s. Calculate the power of the object
A force of 10 N is acting on an object at an angle of 120 degrees through a distance of 4m. Calculate the work done
Which of the following fields is dependent on the path?