A box of cereal with a weight of 3.8 N is at rest on the kitchen counter. What is the normal force that the counter exerts on the box of cereal? 3.8 N 0.39 N 6.0 N 37 N
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A: The forward-moving force of the bicycle, F=100 N The air resistance, fair=30 N
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A: F= 300N Mass of red box = 2(blue box) = 100kg
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- 9. Two friends are carrying a 500 N wooden slab along a 45° stairway. The slab is 1.0 m long and 0.40 m high. They each apply vertical upward force (black arrows) on the bottom edges of the box in such a way that the box remains parallel to the stairs as shown in the figure. What are the magnitudes of the forces exerted by the lower and higher friend, respectively? A. 250 N and 250 N B. 300 N and 200 N C. 350 N and 150 N D. 400 N and 100 N 45⁰3. 7.00 kg 3.00 kg 7.00 kg What is the force by tension above the single 7kg bucket hanging on the left? A 68.6 N В. 80.7 N C. 40.3 N D. 12.11 N Page 4 I 21 Q +I have a shelf full of textbookd.Each book has a mass of 1.0 kg and mus=0.3. a. How hard do I need to push horizontally to unstick the top book from the rest of the pile? b. How many books can I unstick from the top of the pile if I push with a force of 16N?
- A painter stands on a horizontal uniform scaffold hung by its ends from two vertical ropes A and B, 6m apart. The scaffold weighs 200N. The tension in A is 750 N and that in B is 250 N. a. What is the weight of the painter? b. How far from A is he standing?O B. 61 N OC 440 N O D.16 N O E. 599 N QUESTION 9 An elevator suspended by a vertical cable is moving downward but slowing down. The magnitude of tension in the cable must be O A. greater than the magnitude of the weight of the elevator. OB. less than than the magnitude of the weight of the elevator. OC. equal to the magnitude of the weight of the elevator. O D. None of the above QUESTION 10 An object moves with a constant speed of 428 m/s on a circular track of radius 21 m. What is the magnitude of the acceleration of Note: For fill in blank, I have set the unit for the answer. So, you just need to provide a number - Please write your numerical a cientific notation. If you are not sure about the number of significant figures, you can keep the number of figures as many as pos ais.) Save and Submit to save and submit. Click Save All Answers to save all answers. pe here to search Co 立A. Given the force F2 and the u and v axes. What are the magnitudes (in Newtons) of the component of this force along the u and v axes respectively. Choices: a. 75 , 150 b. 110 , 150 c. 150 , 75 d. 150 , 78 e. 78 , 110 B. Given the force F1 and the u and v axes. What are the magnitudes (in Newtons) of the component of this force along the u and v axes respectively. Choices: a. 183 , 129 b. 129 , 142 c. 129 , 250 d. 142 , 183 e. 250 , 183 Please kindly input solutions. Thank you .
- Q3. The refrigerator has a weight of 80 kg and rests on a tile floor for which u.= 0.25. also the man has a weight of 70 kg and the coefficient of static friction between the floor and his shoes is µ = 0.5. If he pushes horizontally on the refrigerator, determine if he can move it. If so. does the refrigerator slip or tip? Take g=10m/s² 1.0m 10 1.2m 0.5m A 1.0m60.0° 40.0° T2 T3 F. g A bag of cement weighing 325 N hangs in equilibrium from three wires as suggested in the figure. Assuming that the system in equilibrium, what are the tensions T1, T2, and T3 in the wires? 165 N, 253 N, and 325 N. 165 N, 165 N, and 335 N. 162.5 N, 162.5 N, and 325 N. 253 N, 253 N, 506 N. 253 N, 165 N, and 325 N. CEMENTTwo masses M1 =2 kg and M2 =3 kg placed on a frictionless, horizontal surface, are connected by a light string. A force of Fx =30 N is exerted on the mass M2 to the right. What is the tension in the string? M2 M1 Select one: а. 12 N b. 8 N c. 16 N d. 4 N
- What is the normal force on the mass M = 7 kg in the figure if F = 60 N and the angle e= 30°? F M Select one: A. 70 N В. 30 N С. 40 N D. 120 N E. 100 NVictor and his dog weight 1176N together. Victor has a mass of 63kg. What is the mass of Victor's dog? Victor, his dog and his saxophone are standing on a box. Victor's saxophone has a mass of 2kg and and the box weights 30N. What is the total weight of them all? Victor's dog jumps off the box. About half way to the ground, his acceleration is 8 m/s². What is the upward force on the dog, due to air resistance, at the point?A force of magnitude 7.5 N pushes threes boxes with masses mi = 1.3 kg, m2 = 3.2 kg and m3 = 4.9 kg, as shown in the below figure. Find the magnitude of the 5. contact force between: I. boxes 1 and 2. II. boxes 2 and 3. 2 3 3.20 kg F = 7.50 N 4.90 kg 1.30 kg