Question

a block of mass 50 kg can slide on a rough horizontal surface .the coefficient of friction between the block and the surface is 0.6 .the least force of pull acting at an angle of 30degree to the upward drawn verticle which causes the block to just slide is

Answer 1

Final Answer : 3000/(5+3√3)N

For Calculation see pic

Answer 2

Answer:

Explanation:

1) A block of mass 50 kg can slide on a rough horizontal surface. The coefficient of friction between the block and the surface is 0.6. The least force of pull acting at an angle of 30° to the upward drawn vertical which causes the block to just slide is                           [ISM Dhanbad 1994]

A)                         29.43 N                      

B)                         219.6 N            

C)                         21.96 N            

D)                         294.3 N