Propulsion force of a rocket is____________________?
Correct answer: A. non-conservative force
- A. non-conservative force
- B. conservative force
- C. both A and B
- D. none of these
Explanation
Rocket thrust is produced by ejecting gases and depends on the changing mass and interaction of the rocket with its exhaust, so it is treated as a non-conservative force. A conservative force, the likely mistaken choice, has work determined only by initial and final positions, as in gravity or an ideal spring.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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 questions
What is the SI unit of modulus of elasticity of substance ?
A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?
Materials that undergo plastic deformation before breaking are called __________________?
The area under the force displacement graph represents__________________?
Work has the dimension as that of same as that of__________________?
Which of the following types of force can do no work on the particle on which it acts ?