Consider the experiment described in Question 3.6 (Figure Q3.6 ). (a) Draw force diagrams for the magnet and for the paperclip. (b) Which of the forces that you have drawn are pairs according to
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
College Physics: Explore And Apply, Volume 2 (2nd Edition)
Additional Science Textbook Solutions
Physics for Scientists and Engineers with Modern Physics
College Physics
Conceptual Physics (12th Edition)
Conceptual Integrated Science
College Physics: A Strategic Approach (3rd Edition)
Applied Physics (11th Edition)
- An object of mass m is subjected to three forces: F1, F2, and F3. In the right figure, the three forces are shown in their respective directions. The forces F1 and F3 have a magnitude of F, while F2 has a value of 2F. What is the object's acceleration? Remember that an acceleration is a vector and express it in terms of F and m.arrow_forwardIn the figure (Figure 1) a worker lifts a weight w by pulling down on a rope with a force F. The upper pulley is attached to the ceiling by a chain, and the lower pulley is attached to the weight by another chain. The weight is lifted at constant speed. Assume that the rope, pulleys, and chains all have negligible weights. In terms of w, find the tension in the lower chain. In terms of w, find the tension in upper chain. In terms of w, find the magnitude of the force F if the weight is lifted at constant speed.arrow_forwardKendra and her brother are pushing a stalled car. At one point, the forces acting on a the car are the following: a gravitational force of 17,400 N downward, a normal force of 17,400 N upward, Kendra’s pushing force of 235 N southward, her brother’s pushing force of 223 N southward, and a friction force of 458 N northward. Which of the following statements is accurate? There is a net force of 35,716 N acting on the car. There is a net force of 916 N acting on the car. There is no net force acting on the car. There is a net force of 458 N acting on the car.arrow_forward
- The strings and frictionless pulleys have negligible masses. The coefficients of kinetic friction is 0.25 and static friction is 0.30. Block A has a mass of 3 kg and block B has a mass of 4 kg. a) What is the maximum mass block C can have before block B will start to move? b) If block C has a mass of 7 kg and was 1 m above the ground, how long would it take block C to hit the ground starting from rest?arrow_forwardA student is pulling a crate with a mass of 66.6 kg along a horizontal frictionless floor with a rope that’s inclined at an angle θ = 30.0° above the horizontal as shown. The tension force is measured to be 239 N. What is the magnitude of the normal force on the crate from the floor, in Newtons? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.arrow_forwardTwo forces are applied to a 4.0 kg cart on a rough surface as shown. At a certain instant, force A is 12 N to the right, and force B is 20 N to the left. The friction force is 2.0 N. What is the acceleration of the cart at this instant, in m/s? (Hint: What is the direction of the friction in this case? Draw a free-body diagram.) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.arrow_forward
- A block is suspended from a pulley and the tension in the rope is 92.4 N (see figure (a)). In figure (b), the block is pulled at constant velocity. Now what is the tension (in N) in the rope?arrow_forwardBillie Budten and Mia Neezhirt are having an intense argument at the lunch table. They are adding two force vectors together to determine the resultant force. The magnitude of the two forces are 3 N and 4 N. Billie is arguing that the sum of the two forces is 7 N. Mia argues that the two forces add together to equal 5 N. Who is right? Explain.arrow_forwardA 1,910 kg African bush elephant (Loxodonta africana) is pushing a 2,890 kg car. The elephant and the car move forward together with a maximum forward force of 8,750 N. Assuming friction is zero, what is the magnitude of the force (in kN) of the rhinoceros on the car? Enter only the numerical part of your answer to three significant figures.arrow_forward
- firsthand in the laboratory. Thought Experiment 1. A 2 kg mass and a 3 kg mass are connected by a massless cord and move on a horizontal frictionless surface. The 3 kg mass is pulled to the right with a force of 20 N. The tension in the cord is 8 N. Fill in the "F" and "ma" blanks. 2 kg 8 N 3 kg 20 N Force: Net Force on 2 kg mass N. Net Force on 3 kg mass N. - Motion: Mass X Accel. of 2 kg mass = kg m/s. %D Mass X Accel. of 3 kg mass = kg m/s². DELL IIarrow_forwardShown to the right is a block of mass m = 12.9 kg sitting on a ramp that makes an angle θ = 27° with the horizontal. This block is being pushed by a horizontal force F = 211 N. The coefficient of kinetic friction between the two surfaces is μ = 0.41. a. Write an equation for the acceleration of the block up the ramp using variables from the problem statement together with g for the acceleration due to gravity. b. Find the acceleration of the block up the ramp in m/s2.arrow_forwardAn inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley (see Figure), Nick pulls on the loose end of the rope with such a force that the spring scale reads 250 N. Nick's true weight is 320 N, and the chair weighs 160 N. Nick's feet are not touching the ground. (a) Draw one pair of diagrams showing the forces for Nick and the chair considered as separate systems and another diagram for Nick and the chair considered as one system. (b) Show that the acceleration of the system is upward and find its magnitude. (c) Find the force Nick exerts on the chair. 2.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning