Static friction

_______ force is less than or equal to the product of the coefficient of static friction and the normal force.

• Kinetic friction

• Static friction

• Gravitational

An object of mass 5kg rests on a horizontal floor. The coefficient static friction is 0.4 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 17.6 N

• 18 N

• 19.6 N

You need to move a 105-kg sofa to a different location in the room. It takes a force of 102 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?

• 1

• 0.099

• 0.8

If you use need a horizontal force of 30.0 N to slide a

12.0-kg wooden crate across a floor at a constant velocity, what is the coefficient of static friction between the crate and the floor?

• 0.3

• 0.6

• 0.255

You need to move a 400-kg sofa to a different location in the room. It takes a force of 102 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?

• 0.6

• 0.026

• 0.2

An object of mass 7kg rests on a horizontal floor. The coefficient static friction is 0.9 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 55 N

• 70 N

• 61.74 N

An object of mass 12kg rests on a horizontal floor. The coefficient static friction is 0.2 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 26.9 N

• 23.52 N

• 22 N

An object of mass 16 kg rests on a horizontal floor. The coefficient static friction is 0.7 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 123 N

• 789 N

• 109.76 N

An object of mass 98 kg rests on a horizontal floor. The coefficient static friction is 0.78 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 869.1 N

• 749.112 N

• 964 .3 N

An object of mass 87 kg rests on a horizontal floor. The coefficient static friction is 0.8 and acceleration of gravity is 9.8 m/s². Determine the maximum force of the static friction.

• 456 N

• 670.3 N

• 682.08 N