COMEDK2020PhysicsLaws of Motion
A body under the action of a force F =6 i -8 j +10 k , acquires an acceleration of 1 ~m / s ² . The mass of this body must be
Options
- A10 ~kg
- B20 ~kg
- C10 2 ~kg
- D2 10 ~kg
Correct answer
C. 10 2 ~kg
Step-by-step solution
Given, F =6 i -8 j +10 k aligned a &=1 ~m / s ² | F | &= 6²+(-8)²+10² &= 200 | F | &=10 2 ~N m a &=10 2 m &= 10 2 a &= 10 2 1 &=10 2 ~kg aligned