A 2.66-kg block is at rest on a horizontal floor. If you push horizontally on the 2.66-kg block with a force of 12.7 N, it just starts to move. What is the coefficient of static friction?

A 2.8 kg block is pushed along a horizontal floor by a force F of magnitude 19 N at an angle 𝜃 = 35° with the horizontal (Fig. 6-49). The coefficient of kinetic friction between the block and floor is 0.25. (The block initially starts at rest.)Figure 6-49(a) Calculate the magnitude of the frictional force on the block from the floor. N(b) Calculate the magnitude of the acceleration of the block. m/s2

a force of magnitude F = 12.0 Napplied to an 8.00 kg block at a downward angle ofθ = 30.0°. The coefficient of static friction between blockand floor is 𝜇s = 0.700; the coefficient of kinetic friction is𝜇k = 0.400. Does the block begin to slide or does it remainstationary? What is the magnitude of the frictional forceon the block?

A block of mass 6 kg is being pulled by force 24 N as shown. If coefficient of friction between block and the surface is 0.6, frictional force acting on the block is   A.36 N  B.32 NC.12 N  D.none of these

You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 273 N in the negative x direction to try and move the 53 kg refrigerator. The coefficient of static friction is 0.68.(a)How much static frictional force does the floor exert on the refrigerator? Give both magnitude (in N) and direction.magnitude Ndirection (b)What maximum force (in N) do you need to apply before the refrigerator starts to move? N

A block of mass 1 kg lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is 0.6, If the acceleration of the truck is 5 m/s2, the frictional force acting on the block is :A 5 N B 6 N C 10 N D 15 N