Problems

Problems

Calculate the force P necessary to initiate movement of the 40 kg cylinder. Friction coefficient for both surfaces is 0.25. What is the friction at B?

Determine the range of cylinder mass m for which the system is in equilibrium. Coefficient of friction between the 50 kg block and the incline is 0.15 and that between the cord and the cylindrical support is 0.25

Coefficient of friction is 0.5. block has 8 kg mass. What is the force p required to make the block slip?

Determine the maximum slab thickness b so that the slab can get dragged in by means of friction alone.

What happens first? Rolling or slipping?

Man is 180 lb. friction is 0.60. compute the force exerted on the rope by the man for lowering himself slowly.

Tension in cable is 10000 lb. the 5/4” screws have a mean diameter of 1.15 “ and have five threads per inch. Friction is 0.25 max. determine moment M required for tightening and loosening

T=8KN. Mean diameter = 16 mm, Lead = 4 mm. coefficient of friction = 0.24. Calculate M for movement in either direction.