Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2008
Exam
NEET
Year
2008
Subject
Physics
Chapter
Mathematics in Physics

NEET 2008 · Physics · Mathematics in Physics

Three forces acting on a body are shown in the figure. To have the...

Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the

Options

  1. A3 N\sqrt{3} \mathrm{~N}
  2. B0.5 N0.5 \mathrm{~N}
  3. C1.5 N1.5 \mathrm{~N}
  4. D34 N\frac{\sqrt{3}}{4} \mathrm{~N}

Correct answer

B. 0.5 N0.5 \mathrm{~N}

Step-by-step solution

Net force along xx-axis zero. Let the unknown force be FF along xx-axis ∴F+1sin⁡30∘+2sin⁡30∘−4sin⁡30∘=0∴∣F∣=0.5 N\begin{aligned}& \therefore F+1 \sin 30^{{}^{\circ}}+2 \sin 30^{{}^{\circ}}-4 \sin 30^{{}^{\circ}}=0 \\ & \therefore|F|=0.5 \mathrm{~N} \end{aligned}
Practice Mathematics in Physics on Quantrex Academy →

More from Mathematics in Physics

For the vector A making an angle θ with the negative X-axis and lying in the third… MHT CET Medical 2026The heat generated in a circuit is given by Q = I^2 R t . If the percentage error in the… MHT CET Medical 2026What is the relation between the two vectors A = 2 i + 5 j - 6 k and B = i + (5)/(2) j… MHT CET Medical 2026A body travels uniformly a distance of (20 ± 0.2) m in a time (4.0 ± 0.4) s. The… MHT CET Medical 2026A vector B is along positive y-axis and its vector product with another vector A is zero… MHT CET Medical 2026The physical quantity P= a^ 3 b^ 2 c^ 1/3 d^ 1/4 , where the percentage error in a, b, c… MHT CET Medical 2026A and B are expressed as A =2 i + j and B = i - j . Unit vector perpendicular to A and B… MHT CET Medical 2026Given A = 2 i - 2 j + 8 k and B = 2 i - m j + 8 k , if A and B have the same direction… MHT CET Medical 2026 Full Mathematics in Physics list All NEET PYQs