Work done in time t on a body of mass m which | vedclass

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

Question

(D) The body starts from rest,so initial velocity $u = 0$. The acceleration $a$ is constant,given by $a = \frac{v}{t_1}$.The force acting on the body

Vedclass · Accepted Answer

$\frac{1}{2}m\frac{v^2}{t_1^2}t^2$

Vedclass · Answer

(D) The body starts from rest,so initial velocity $u = 0$. The acceleration $a$ is constant,given by $a = \frac{v}{t_1}$.The force acting on the body is $F = ma = m\left(\frac{v}{t_1}ight)$.The distance $s$ covered in time $t$ is $s = ut + \frac{1}{2}at^2 = 0 + \frac{1}{2}\left(\frac{v}{t_1}ight)t^2$.Work done $W$ is given by $W = F \cdot s$.Substituting the values,$W = \left(m\frac{v}{t_1}ight) 	imes \left(\frac{1}{2}\frac{v}{t_1}t^2ight) = \frac{1}{2}m\frac{v^2}{t_1^2}t^2$.

Work done in time $t$ on a body of mass $m$ which is accelerated from rest to a speed $v$ in time $t_1$ as a function of time $t$ is given by

Similar Questions

The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by

$A$ particle is projected from the ground with an initial speed of $v$ at an angle of projection $\theta$. The average velocity of the particle between its time of projection and the time it reaches the highest point of its trajectory is

The major product of the following reaction is

$A$ $2\,\mu F$ capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch $S$ is turned to position $2$ is.....$\%$

Which of the following oxides will produce hydrogen peroxide upon reaction with dilute acid?

Vedclass Test Series

Exam Paper Generator

Online Exam Module