List of top Physics Questions on Mechanics asked in AP ECET EIE

In a hydroelectric power station, the height of the dam is $10\text{ m}$. How many kilograms of water must fall per second on the blades of a turbine in order to generate $1\text{ MW}$ of electrical power? $[g = 10\text{ m/s}^2]$

The kinetic energy at the highest point of the trajectory of a projectile is $200 \text{ J}$. If the mass of the projectile is $1 \text{ Kg}$ and the maximum height reached by it is $20 \text{ m}$, then velocity of the projectile from the ground is

A force applied by an engine on train of mass $2.05 \times 10^6 \text{ Kg}$ changes its velocity from $5 \text{ m/s}$ to $25 \text{ m/s}$ in $5 \text{ minutes}$. The power of the engine is

The position $x$ of a particle with respect to time '$t$' along x- axis is given by $x = 9t^2 - t^3$ where $x$ is in metres and $t$ in seconds. The position of this particle when it achieves maximum speed along the x direction is

A ball is projected vertically up with a velocity of $40 \text{ ms}^{-1}$ from ground. At the same time another ball is dropped from a height of $100 \text{ m}$. The magnitudes of their velocities are equal after

Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is $\pi/8$ and the maximum height reached by it is $102$ metres. Then the maximum height reached by the other in metres is

A projectile is thrown into air with velocity u at an angle $\theta$ to the horizontal. The time at which its direction of motion is perpendicular to its initial direction is

When a bicycle is in motion and pedalled, the force of friction exerted by ground on the two wheels is such that it acts

Two blocks of masses $4\text{ kg}$ and $2\text{ kg}$ are connected by a heavy string and placed on rough horizontal plane. The $2\text{ kg}$ block is pulled with a constant force $F$. The coefficient of friction between the blocks and the ground is $0.5$. The value of $F$ so that tension in the string is constant throughout during the motion of the blocks is

If $|\vec{A} \times \vec{B}| = \sqrt{3} \vec{A} \cdot \vec{B}$ then the value of $|\vec{A} + \vec{B}|$ is

Of the vectors given below, the parallel vectors are $\vec{A} = 6\hat{i} + 8\hat{j}$, $\vec{B} = 210\hat{i} + 280\hat{k}$, $\vec{C} = 5.1\hat{i} + 6.8\hat{j}$, $\vec{D} = 3.6\hat{i} + 8\hat{j} + 48\hat{k}$