A body of mass 2 , kg collides with a wall wi | vedclass

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

Question

(B) The force exerted on the wall is given by the rate of change of momentum: $F = \frac{\Delta p}{\Delta t}$.Initial momentum $p_i = m 	imes v = 2 \

Vedclass · Accepted Answer

$2 	imes 10^4 \, N$

Vedclass · Answer

(B) The force exerted on the wall is given by the rate of change of momentum: $F = \frac{\Delta p}{\Delta t}$.Initial momentum $p_i = m 	imes v = 2 \, kg 	imes 100 \, m/s = 200 \, kg \cdot m/s$.Final momentum $p_f = m 	imes (-v) = 2 \, kg 	imes (-100 \, m/s) = -200 \, kg \cdot m/s$ (assuming the wall is in the positive direction).Change in momentum $\Delta p = p_f - p_i = -200 - 200 = -400 \, kg \cdot m/s$.The magnitude of the change in momentum is $|\Delta p| = 400 \, kg \cdot m/s$.Given time of contact $\Delta t = 1/50 \, s$.Force $F = \frac{|\Delta p|}{\Delta t} = \frac{400}{1/50} = 400 	imes 50 = 20,000 \, N = 2 	imes 10^4 \, N$.

$A$ body of mass $2 \, kg$ collides with a wall with a speed of $100 \, m/s$ and rebounds with the same speed. If the time of contact was $1/50 \, s$,the force exerted on the wall is:

Similar Questions

$A$ body whose momentum is constant must have constant

$A$ ball of mass $m$ moving with velocity $v_0$ collides with a wall as shown in the figure. After impact,it rebounds with a velocity $\frac{3}{4}v_0$. The impulse acting on the ball during the impact is

$A$ force is applied to a body of mass $3 \ kg$ at rest on a frictionless horizontal surface, as shown in the force-time $(F-t)$ graph. The speed of the body after $1 \ s$ is: (in $m/s$)

$A$ mass of $1 \ kg$ is suspended by a string $A$. Another string $C$ is connected to its lower end (see figure). If a sudden jerk is given to $C$,then

$A$ metal ball hits a wall and does not rebound,whereas a rubber ball of the same mass hits the wall with the same velocity and rebounds. What can be concluded from this?

Vedclass Test Series

Exam Paper Generator

Online Exam Module