Kahoot

Question 1 A packing crate slides down an inclined ramp at constant velocity. Thus we can deduce that

Question 1 Answer A packing crate slides down an inclined ramp at constant velocity. Thus we can deduce that a frictional force is acting on it.

Question 2 A toolbox, of mass M, is resting on a flat board. One end of the board is lifted up until the toolbox just starts to slide. The angle θ that the board makes with the horizontal for this to occur depends on the

Question 2 Answer A toolbox, of mass M, is resting on a flat board. One end of the board is lifted up until the toolbox just starts to slide. The angle θ that the board makes with the horizontal for this to occur depends on the coefficient of static friction, μ. Hint: The acceleration of gravity, g, cancels out.

Question 3 To avoid slipping while walking on ice, one should take smaller steps because of the

Question 3 Answer To avoid slipping while walking on ice, one should take smaller steps because of the Friction of ice is small

Question 4 A force of 98 N is required to just start moving a body of mass 100 kg over ice. Calculate the coefficient of static friction.

Question 4 Answer A force of 98 N is required to just start moving a body of mass 100 kg over ice. The coefficient of static friction is 0.1 Use the equation for friction and make sure the mass is converted to a force.

Question 5 Which of the following statements is not true? 1.The force of friction acts opposite to the applied force 2.Rolling friction is greater than sliding friction 3.The coefficient of friction between wood&wood is less than 1

Question 5 Answer Which of the following statements is not true? Rolling friction is greater than sliding friction

Question 6 When there is no relative motion between two surfaces, the force

Question 6 Answer When there is no relative motion between two surfaces, the force exerted by one surface on the other is static friction force

Question 7

Question 7 Answer 31 N Force of Friction = 40 kg x 9.8 m/s/s x 0.08 N

Question 8

Question 8 answer Kinetic friction force

Question 9

Question 9 Answer 110 N - take coefficient times the normal force

Question 10

Question 10 Answer

Question 11

Question 11 answer

Question 12

Question 12 answer equilibrant

Question 13

Question 13 answer

Question 14

Question 14 answer

Question 15

Question 16

Question 16 answer

Question 17 The resultant between 2 vectors can be found by placing the vectors

Question 17 answer The resultant between 2 vectors can be found by placing the vectors Tip to tail

Question 18 Equilibrium can occur

Question 18 answer Equilibrium can occur only if the sum of the forces is zero.

Question 19 The normal force on an object always act

Question 19 answer The normal force on an object always act perpendicular to the surface upon which object is resting.