AP EAMCET · PHYSICS · Laws of Motion
A block of mass 1.5 kg kept on a rough horizontal surface is given a horizontal velocity of \(10 \mathrm{~ms}^{-1}\). If the block comes to rest after travelling a distance of 12.5 m , the coefficient of kinetic friction between the surface and the block is (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )
- A 0.2
- B 0.4
- C 0.8
- D 0.6
Answer & Solution
Correct Answer
(B) 0.4
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{u}=10 \mathrm{~ms}^{-1}, \mathrm{~m}=1.5 \mathrm{~kg} \\ & \mathrm{a}=\frac{\mathrm{f}}{\mathrm{m}}=\frac{\mu \mathrm{mg}}{\mathrm{m}}=\mathrm{Mg}\end{aligned}\) \(\therefore\) Stopping distance, \(S=\frac{u^2}{2 a}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- A Carnot engine operating between temperatures \(600 \mathrm{~K}\) and \(300 \mathrm{~K}\), absorbs \(800 \mathrm{~J}\) of heat from the source. The mechanical work done per cycle isAP EAMCET 2022 Easy
- Truth table for the given circuit is
AP EAMCET 2024 Easy - The pressure required to decrease the volume of \(4000 \mathrm{cc}\) water by \(0.05 \%\) is
(Bulk modulus of water \(=2.2 \times 10^9 \mathrm{Nm}^{-2}\) )AP EAMCET 2023 Medium - A cyclist comes to a skidding stop in \(10 \mathrm{~m}\). During this process, the force on the cycle due to the road is \(200 \mathrm{~N}\) and is directly opposite to the motion. How much work does the road do on the cycle?AP EAMCET 2020 Hard
- A vessel containing nitrogen gas is supplied a heat of \(498 \mathrm{~J}\), so as to raise the temperature of the gas by \(40^{\circ} \mathrm{C}\) at constant pressure. The mass of nitrogen gas in the vessel is (Molecular mass of nitrogen \(=28 \mathrm{~g}\); Universal gas constant \(=8.3 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\) )AP EAMCET 2022 Easy
- The potential is varying with distance \((\mathrm{x})\) as \(\mathrm{V}=\frac{1}{2}\) \(\left(\mathrm{y}^2-4 \mathrm{x}\right)\) volt. The electric field at \(\mathrm{x}=1 \mathrm{~m}\) and \(\mathrm{y}=1 \mathrm{~m}\) isAP EAMCET 2023 Easy
More PYQs from AP EAMCET
- For a certain organ pipe, three successive resonance frequencies are observed at 425,595 and \(765 \mathrm{~Hz}\), respectively. The length of the pipe is (speed of sound in air \(=340 \mathrm{~ms}^{-1}\) )AP EAMCET 2016 Easy
- \(R\) divides the line joining two points \(P\) and \(Q\) whose position vectors are \(\hat{\mathbf{i}}+2 \hat{\mathbf{j}}-\hat{\mathbf{k}}\) and \(-\hat{\mathbf{i}}+\hat{\mathbf{j}}+\hat{\mathbf{k}}\) respectively in the ratio \(2: 1\) externally. \(S\) divides \(P Q\) internally in the ratio \(2: 1\). Then, the position vector of the midpoint of the line joining \(R\) and \(S\) isAP EAMCET 2021 Easy
- The density of an ideal gas can be given by where and respectively denote pressure, volume, molar-mass, temperature and universal gas constant.AP EAMCET 2021 Easy
- The incentre of triangle formed by the lines \(x+y=1, x=1, y=1\) isAP EAMCET 2020 Hard
- The energy and radius of electron present in second orbit of \(\mathrm{He}^{+}\)respectively areAP EAMCET 2017 Medium
- For a material, the ratio of Young's modulus to rigidity modulus is 2.8 . If some force is applied on a wire made of this material, its cross-sectional area decreases by \(2 \%\). The percentage change in its length isAP EAMCET 2018 Medium