5.Work, Energy, Power and Collision
medium

$5\; kg$  દળના પદાર્થનું વેગમાન $10\; kg-m/s$ છે.તેના પર $0.2\; N $ બળ $ 10 \;seconds $ સમય સુધી લાગતાં ગતિઊર્જામાં થતો વધારો.....$J$

A

$2.8 $

B

$3.2$

C

$3.8$

D

$4.4 $

Solution

$ {P_2} – {P_1} = F \times t$

==> ${P_2} = {P_1} + F \times t = 10 + 0.2 \times 10 = 12kg{\rm{ – }}m/s$

$E = \frac{1}{{2m}}[P_2^2 – P_1^2] = \frac{1}{{2m}}[{(12)^2} – {(10)^2}]$

$E= \frac{1}{{2 \times 5}}[144 – 100] = \frac{{44}}{{10}} = 4.4\;J$

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.