AP EAMCET · PHYSICS · Laws of Motion
A body of 2 kg mass slides down with an acceleration of \(4 \mathrm{~ms}^{-2}\) on an inclined plane having slope of \(30^{\circ}\). The external force required to take the same body up the plane with same acceleration will be (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )
- A 8 N
- B 16 N
- C 22 N
- D 20 N
Answer & Solution
Correct Answer
(D) 20 N
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{m}=2 \mathrm{~kg}, \mathrm{a}=4 \mathrm{~m} / \mathrm{s}^2 \\ & \therefore \quad 10-\mathrm{f}=2 \times 4 \\ & \therefore \quad \mathrm{f}=2 \mathrm{~N} \end{aligned}\) When the body goes up the inclined plane…
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