The angle of inclination of an inclined plane is . Coefficient of friction between 10kg body on it and its surface is 0.2 . The minimum force required to pull the body up the inclined plane (in N) is
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Given that,
Mass m=10 kg
Inclination angle α=30
0
Friction coefficient μ=0.5
Normal reaction, N=mgcosα
Friction force,F
f
=μN=μmgcosα
Net pulling force, F=F
r
+mgsinα
F=μmgcos30
o
+mgsin30
o
F=0.5×10×9.8×
2
3
+10×9.8×
2
1
=91.4N
Hence, the pulling force is 91.4 N
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