AP EAMCET · PHYSICS · Laws of Motion
A body of mass \(10 \mathrm{~kg}\) is kept on a rough horizontal surface of coefficient of friction 0.3 . If a horizontal force of \(50 \mathrm{~N}\) is applied on the body, then the acceleration of the body is
(Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )
- A \(5 \mathrm{~ms}^{-2}\)
- B \(2 \mathrm{~ms}^{-2}\)
- C \(3 \mathrm{~ms}^{-2}\)
- D \(1 \mathrm{~ms}^{-2}\)
Answer & Solution
Correct Answer
(B) \(2 \mathrm{~ms}^{-2}\)
Step-by-step Solution
Detailed explanation
Mass, \(m=10 \mathrm{~kg}\) Coefficient of friction, \(\mathrm{M}=0.3\) force, \(\mathrm{F}=50 \mathrm{~N}\). Acceleration, \(\mathrm{a}=\) ? Net Force is given by, \(F-f_s=m a\) Here, \(\mathrm{f}_{\mathrm{s}}=\mu \mathrm{mg}\) [frictional force]…
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
- Two blocks of masses \(\mathrm{m}\) and \(2 \mathrm{~m}\) kept on a frictionless horizontal surface are connected by a massless string. Two horizontal forces \(F_1=(4.2 t) N\) and \(F_2=(7.5 t) N\), where ' \(t\) ' is time in seconds, are acting on the system as shown in the figure. The time at which the tension in the string between the two blocks becomes \(10.6 \mathrm{~N}\) is s.
AP EAMCET 2018 Hard - A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field \(2^{5 / 4} \mathrm{~s}\). One of the magnets is removed and if the other magnet oscillates in the same field, then the time period in seconds is :AP EAMCET 2003 Hard
- A galvanometer, having a resistance of \(50 \Omega\), gives a full scale deflection for a current of 0.05 A. The length in metre of a resistance wire of area of cross-section \(2.97 \times 10^{-2} \mathrm{~cm}^2\) that can be used to convert the galvanometer into an ammeter which can read a maximum of 5 A current is :
(Specific resistance of the wire\(\left.=5 \times 10^{-7} \Omega-\mathrm{m}\right)\)AP EAMCET 2003 Hard - \((60 \hat{i}+15 \hat{j}-3 \hat{k}) N\) force produces a velocity \((2 \hat{i}-4 \hat{j}+5 \hat{k})\) in a particle. The value of power at that time will beAP EAMCET 2020 Easy
- In a wire of radius 1 mm, a steady current of 2 A uniformly distributed across the cross-section of the wire is flowing. Then the magnetic field at a point 0.25 mm from the centre of the wire isAP EAMCET 2025 Medium
- An AC source of angular frequency \(\omega\) is fed across a resistor \(R\) and a capacitor \(C\) in series. The current flowing in the circuit found to be \(I\). Now the frequency of the source is changed to \(\frac{\omega}{3}\), (maintaining the same voltage) the current in the circuit is found to be halved. What is the ratio of reactance to resistance at the original frequency?AP EAMCET 2021 Medium
More PYQs from AP EAMCET
- For how many distinct values of , the equation holds?AP EAMCET 2021 Medium
- If \(f(x)=x^4-x^3+7 x^2+14\), then what is the value of \(f^{\prime}(5)\) ?AP EAMCET 2020 Easy
- If \(n\) is a positive integer, then \(\sum_{r=1}^n r \cdot C_r=\)AP EAMCET 2020 Medium
- Which one of the following is a semiconductor?AP EAMCET 2023 Easy
- The potential energy of a simple harmonic oscillator of mass \(2 \mathrm{~kg}\) at its mean position is \(5 \mathrm{~J}\). If its total energy is \(9 \mathrm{~J}\) and amplitude is \(1 \mathrm{~cm}\), then its time period isAP EAMCET 2018 Easy
- If \(z=(1-i)^3(x+i)\) is a purely imaginary number for \(x=x_1\) and if \(\mathrm{z}\) is a purely real number for \(\mathrm{x}=\mathrm{x}_2\), then \(\mathrm{x}_1 \mathrm{x}_2=\)AP EAMCET 2023 Easy