MCQ
You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by pushing against the surface
- ABy jumping
- ✓By spitting or sneezing
- CBy rolling your body on the surface
- DBy running on the plane
✓
Answer
Correct option: B.
By spitting or sneezing
b
(b) As no external force is acting on the person, thus the linear momentum of the system is conserved. Hence by spitting or sneezing or throwing any object in the forward direction, will recoil the person in the backward direction and the person can get off the frictionless horizontal plane.
(b) As no external force is acting on the person, thus the linear momentum of the system is conserved. Hence by spitting or sneezing or throwing any object in the forward direction, will recoil the person in the backward direction and the person can get off the frictionless horizontal plane.
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