List of top Physics Questions on Newtons Laws of Motion asked in LPUNEST

The effect of frictional force may be minimized by:
A stone of mass \(1\,\text{kg}\) is raised through \(1\,\text{m}\) height.
Temperature can be expressed as derived quantity in terms of:
Electron volt is a unit of:
If a body is moving at constant speed in a circular path, its:
A fully charged capacitor \(C\) with initial charge \(q_0\) is connected to a coil of self-inductance \(L\) at \(t = 0\). The time at which the energy is stored equally in the form of electric field in the capacitor and the magnetic field in the inductor is:
Acceleration versus velocity graph of a particle moving in a straight line is as shown in the graph. The corresponding velocity–time graph would be
A man wishes to cross the river flowing with velocity \(v\) making angle \(\theta\) with y direction. If he swims with speed \(u\) and width of river is \(d\), the time taken will be
In a system, 8 kg mass is subjected to a force of 16 N along positive y axis and another 8 N along positive x axis. The angle made by acceleration of centre of mass with x axis is
A lift is moving in upward direction. The total mass of the lift and the passengers is 1600 kg. The variation of the velocity of lift is as shown in the figure. The tension in the rope at \(t = 8^{\text{th}}\) second will be
A mass \(m\) moves with velocity \(v\) and collides elastically with another identical mass. After collision, the first mass moves with velocity \(\frac{v}{\sqrt3}\) in a direction perpendicular to the initial direction of motion. Find the speed of 2nd mass after collision.
For the following question, enter the correct numerical value up to TWO decimal places. If the numerical value has more than two decimal places, round-off the value to TWO decimal places. (For example: Numerical value 5 will be written as 5.00 and 2.346 will be written as 2.35) An elevator and its load have a total mass of 800 kg. If the elevator, originally moving downward at \(10\,\text{m s}^{-1}\), is brought to rest with constant deceleration in a distance of 25 m, the tension in the supporting cable will be _____ N. (Take \( g = 10\,\text{m s}^{-2} \))
For the following question, enter the correct numerical value up to TWO decimal places. If the numerical value has more than two decimal places, round-off the value to TWO decimal places. (For example: Numerical value 5 will be written as 5.00 and 2.346 will be written as 2.35) A mass of 3 kg descending vertically downwards supports a mass of 2 kg by means of a light string passing over a pulley. At the end of 5 s the string breaks. How much high from now the 2 kg mass will go? _____ m
A rod of length $50\ \text{cm}$ is pivoted at one end. It is raised such that it makes an angle of $30^\circ$ from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad s$^{-1}$) will be
A long cylindrical rod is welded to a thin circular disc of diameter $0.5\,\text{m}$ at a point on its circumference. The rod is in the same plane as that of the disc and forms a tangent to the disc. The radius of gyration of the disc about the rod (in m) is
Moon is revolving in a circular orbit of radius $60R$ ($R=$ radius of earth). Assume that the radius of the moon is $\dfrac{R}{4}$. If the moon is stopped for an instant and then released, it will fall towards the earth. Ignoring atmospheric friction, the velocity of the moon just before it strikes the earth is (Take $g=$ acceleration due to gravity at the surface of earth)
A shell is fired from a fixed artillery gun with an initial speed $u$ such that it hits the target on the ground at a distance $R$ from it. If $t_1$ and $t_2$ are the values of the time taken by it to hit the target in two possible ways, the product $t_1t_2$ is
A block of mass $m$ is kept on a platform which starts from rest with constant acceleration $\dfrac{g}{2}$ upward, as shown in the figure. Work done by the normal reaction on the block in time $t$ is: