Questions  

A block of mass 5 kg is placed on a rough horizontal plane. A time dependent horizontal force F = (t2+2t)N acts on the block. The friction force between the block and the plane at t = 3 s is (μ=0.4)

Unlock the full solution & master the concept.

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya
a
8 N
b
15 N
c
20 N
d
Zero
NEW

Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is B

F=t2+2tfL=μmg=0.4×5×10=20N if t=3F=32+2×3N=15N

prepare smarter

with latest test series, free mock tests, and classes
NEET AITSIIT JEE AITSLive ClassFree Mocks

ctaimg

Similar Questions

The friction force acting on the block at time t = 4s will be

Want to Improve your productivity
talk to our academic experts now !!

counselling
india
+91

whats app icon