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Grade: 11 

                        
A block of rate 20 newton is on a horizontal surface minimum force applied to pull it when applied force makes an angle 60 degree with horizontal angle of friction a is equal to 30 degree
2 years ago

Answers : (1)

Himanshu Rathour
119 Points 
							
Given angle of friction =30
Coefficient of friction u=tan30=1/√3
Let min force is F
Normal reaction N=20+Fsin60
To just move the block
Fcos60=uN
F=20N
2 years ago
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