AP EAMCET202316 May 2023Morning ShiftPhysicsMathematics in PhysicsActual
A force, F =(4 i +3 j -5 k ) N is acting on a body making an angle with the horizontal. Then the angle ' ' is
Options
- A⁻¹ ( 2 2 5 )
- B⁻¹ ( 2 5 )
- C⁻¹ ( 5 2 9 )
- D⁻¹ ( 3 5 2 )
Correct answer
A. ⁻¹ ( 2 2 5 )
Step-by-step solution
F =4 j +3 j -5 k aligned & F =| F | & = F | F | = 4 16+9+25 = 4 5 2 = 2 2 5 & = ⁻¹ ( 2 2 5 ) aligned