A body is initially at rest. It undergoes one | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Let the body start from rest $(u = 0)$ and move with a constant acceleration $a$. At any time $t$,the velocity $v$ of the body is given by the fir

Vedclass · Accepted Answer

$t$

Vedclass · Answer

(B) Let the body start from rest $(u = 0)$ and move with a constant acceleration $a$. At any time $t$,the velocity $v$ of the body is given by the first equation of motion: $v = u + at = 0 + at = at$. The force $F$ acting on the body is given by Newton's second law: $F = ma$. Power $P$ delivered to the body is defined as the product of force and velocity: $P = F \cdot v$. Substituting the expressions for $F$ and $v$: $P = (ma) \cdot (at) = ma^2t$. Since mass $m$ and acceleration $a$ are constants,the term $ma^2$ is constant. Therefore,$P \propto t$.

$A$ body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time $t$ is proportional to

Similar Questions

$A$ quarter horsepower motor runs at a speed of $600 \ rpm$. Assuming $60 \%$ efficiency,the work done by the motor in one rotation is (in $J$)

Two men have a weight ratio of $5 : 3$. If the ratio of the time taken by them to climb stairs is $11 : 9$,find the ratio of their power.

$A$ car of mass $m$ is accelerating on a level smooth road under the action of a single force $F$. The power delivered to the car is constant and equal to $P$. If the velocity of the car at an instant is $v$,then after travelling how much distance does its velocity become double?

$A$ particle of mass $0.2 \ kg$ is moving in one dimension under a force that delivers a constant power $0.5 \ W$ to the particle. If the initial speed of the particle is zero,the speed (in $m/s$) after $5 \ s$ is:

$A$ body is moving unidirectionally under the influence of a source of constant power. Its displacement in time $t$ is proportional to

Vedclass Test Series

Exam Paper Generator

Online Exam Module