Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

Q.

Acceleration versus x and potential energy versus x graph of a particle moving along X-axis are as shown
below. Mass of the particle is 1 kg and velocity at x = 0 is 4 $m s^{- 1}$ .
Match the following columns for x = 8m and mark the correct option from the codes given below
Column I
(A) Final kinetic energy
(B) Work done by conservative forces
(C) Total work done
(D) Work done by external forces
Column II
(p) 120J
(q) 240J
(r ) $-$ 120 J
(s) 128 J

.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

a

A B C D

p q r s

b

A B C D

p s r q

c

A B C D

s q p r

d

A B C D

s p r q

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$v_{f} - v_{i} = Area of a - x graph = 12 {ms}^{- 1}$

$∴ v_{f} = 12 + 4 = 16 {ms}^{- 1}$

$Δ KE = \frac{1}{2} m (v_{f}^{2} - v_{i}^{2}) = 12 OJ$

Total work done by all the forces $= Δ KE = 120 J$

Final KE, $K_{f} = \frac{1}{2} m v_{f}^{2} = 128 J$

Work done by conservative forces $= U_{i} - U_{f} = 240 J$

Work done by external forces = Total work done - Work done by conservative forces

$= - 120 J$

Hence, $A \to s, B \to q, C \to p, D \to r$

Watch 3-min video & get full concept clarity

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs

Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Not sure what to do in the future? Don’t worry! We have a FREE career guidance session just for you!

Acceleration versus x and potential energy versus x graph of a particle moving along X-axis are as shownbelow. Mass of the particle is 1 kg and velocity at x = 0 is 4 ms-1.Match the following columns for x = 8m and mark the correct option from the codes given belowColumn I(A) Final kinetic energy(B) Work done by conservative forces(C) Total work done(D) Work done by external forcesColumn II(p) 120J(q) 240J(r ) -120 J(s) 128 J.