Newton\'s Laws of Motion Problems Multiple Choice Problems/Conceptual Questions
ID: 1584832 • Letter: N
Question
Newton's Laws of Motion Problems Multiple Choice Problems/Conceptual Questions 1. Explain the difference between mass and weight. 2. A slab of concrete rests on an incline. Identify all the forces on the slab, and draw a force diagram. 3. The Rules of Golf specifies a maximum golf ball mass of 45.93 g. Why would it be unfair to use a heavier ball? 4. How does friction help you walk? Is it kinetic friction or static friction? 5. The magnitude of a 15.0-kg dog s weight is (a) 1.53 N; (b) 15.0 N; () 147 N; (d) 225 N. 6. A force acts on a 2-kg mass, giving it acceleration a. When the same force acts on a 3-kg mass, its acceleration is (a) a (b), (c) 3a (d) a 7. A block of ice sliding without friction down a 20° slope has acceleration (a) 9.8 m/s (b) 4.9 m/s (c) 3.4 m/s2 (d) 2.2 m/s A block sliding down a 20° slope with kinetic friction .-0.25 has acceleration, (a) 4.9 m/s (b) 3.4 m/s (c) 1 m/s2 (d) 0 m/s 8, Problems Two forces are applied simultaneously to a crate sliding in a horizontal plane: 13.7 N to the right and 11.5 N to the left. What is the net force on the crate? Boeing 777 has takeoff mass of 247,000 kg. Find the force required to give the aircraft a 3.2 m/s2 acceleration. Assuming the mass of a crate to be 120-kg pulled by a worker and rope tension of 420 N applied at 25o to the horizontal, find (a) the normal force between floor and crate and (b) the crate's acceleration. What a scale actually measures is the normal force between the scale and whatever is on it. Suppose you (mass 65 kg) stand on a scale in an elevator. What is the scale ading when the elevator is (a) accelerating upward at 2.25 m/s (b) moving with consat velocity, and (c) accelerating downward at 2.25 m/s ? You slide your textbook across a lab bench, starting it at 1.8 m/s in the +x -direction. The coefficient of kinetic friction between book and bench is 0.19. (a) What is the books acceleration? (b) Will the book reach the edge of the bench, 1.0 m away? 1. 2. 3. 4. 5.Explanation / Answer
1) mass is the quantity of matter
weight is force applied by earth on the body
weight W = m*g
m is the mass of the body
mass of a body doesnot changes from planet to planet
where as weight changes from planet to planet
please post remaining questions seperately