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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:(II) The two forces F, and F, shown in Fig. 4-52a and b
(looking down) act on an 18.5-kg object on a frictionless
tabletop. If F = 10.2 N and F, = 16.0 N, find the net
force on the object and its acceleration for (a) and (b).
y
y
F2
120°
F
90°
F
(a)
(b)
FIGURE 4–52 Problem 28.
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- 1. Two blocks are connected by a massless rope as shown below. The mass of the block on the table is m₁ and the hanging mass is m₂. The table and the pulley are frictionless. a₁ y m₁ X 3 Subpart 1: Draw FBDs In your notebook, draw free body diagrams for m, and m₂ using the template as shown below. The forces acting on the system are weights of the blocks, m₁g, and mêg, the tension in the string T and the normal reaction N₁ of the table on m₁. m m₂ Subpart 2: Set up Newton's Second Law Equations a2 m₂arrow_forwardA block of mass m slides down from rest on a rough incline of length 8m where the incline makes an angle of 30° with the horizontal. The block comes to rest on the rough horizontal surface after sliding for 4 m. The coefficient of kinetic friction on the incline is 0.30. The coefficient of kinetic friction on the horizontal surface is different from the incline, find this value using two approaches: (i) Using Newton's laws of motion and Kinematics and 30⁰ (ii) Using Work-Kinetic Energy Theorem (Give answer to 2 sig. figs.) 4 m 8 m WAarrow_forward(a) A 1 kg block of wood sits on a 30 degree incline. If an applied force of 10 N causes the block to accelerate up the ramp at 0.5 m/s^2 what is the force of friction between the block and the ramp. [K___/4] Aarrow_forward
- 3-34. Romeo tries to reach Juliet by climbing with constant velocity up a rope which is knotted at point A. Any of the three segments of the rope can sustain a maximum force of 2 kN before it breaks. Determine if Romeo, who has a mass of 65 kg, can climb the rope, and if so, can he along with his Juliet, who has a mass of 60 kg, climb down with constant velocity? B 60° Aarrow_forward(c) The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.25 with the floor. If the train is initially moving at a speed of 48 km/h, in how short a distance can the train be stopped at constant acceleration without causing the crates to slide over the floor?arrow_forwardA bicyclist can coast down a 6.17 degree hill at a constant speed of 6.64 km/h. If the force of air resistance is proportional to the speed vso that Fair = c v, calculate the average force (in N) that must be applied in order to descend the hill at 13.0 km/h. The mass of the cyclist plus bicycle is 77.8 kg.arrow_forward
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