Work Energy And Power Question 207

Question: A 10 kg block is pulled in the vertical plane along a frictionless surface in the form of an arc of a circle of radius 10 m. The applied force is of 200 N as shown in figure. If the block had started from rest at A, the velocity at B would be

Options:

A) 1.7 m/s

B) 17 m/s

C) 27 m/s

D) 34 m/s

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Wgravity+WF=ΔK

10×g(1010cos60)+200×10sin60

=12×10×vf20 vf=17m/s



NCERT Chapter Video Solution

Dual Pane