Question

an object ofmass 4 kg is released from rest and allowed to move freely on a rough incline plane the speed of block is 6m/s after 3s . inclination is 37 find coefficient of friction​

Answer 1

Answer:

Given,

m=4kg

θ=37  

0

 

μ=?

g=10m/s  

2

 

The contact force is F  

c

​  

is the resultant of frictional force and normal force.

From the free body diagram,

Normal force, N=mgcosθ

N=4×10×cos37

N=4X2X4=32

 

N=32 NEWTON

COEFFICIENT OF FRICTION 0.5