Answered: i i. A 600-N object is to be given an…

i i. A 600-N object is to be given an acceleration of 0.8 m/s2. How large an unbalanced force must act upon it? O a. 42.8 N. b. 43 N. c. 48 N. d. 48.96 N.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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65.0 N 30 30.0 N- 20 20.0 N What is the magnitude of the resultant of these three forces? a. 27.0 N b. 33.2 N c. 36.3 N d. 23.8 N 105 N e.
36. An object rest on an inclined. As the angle between the inclined and the horizontal increases, the force needed to prevent the object from sliding down the inclined a. decreases b. increases c. remains the same d. none of these 37. An elevator containing a man weighing 800 Newton's is rising at a constant speed. The force exerted by the man on the floor of the elevator is a. Less than 80 N b. between 80 and 800 N c. 800 N d. more than 800N 38. If the mass of one of two particles is double and the distance between them is doubled, the force of attraction between the two particles will a. decreases b. increase c. remain the same d. none of these 39. If the mass of an object near the surface of the earth is increases from M to 3M, the acceleration of the object due to gravity will be a. one-third as great b. 9 times as great c. 3 times as great d. unchanged
7. You put a box on a skateboard and give it a quick push with a certain force. It starts to move. After it leaves your hand, it will... * a. Continue at a constant speed forever. O b. Slow down constantly until it stops. c. Speed up constantly forever. d. Speed up for a little while, then go at a constant speed forever. e. Speed up for a little while, go at a constant speed for a while, then slow down to a stop. sheet of oa
12. How much force would a car's tires need to provide to accelerate an 1800 kg car at a rate of 4.0 m/s?? Your answer: O 39 N O 450 N 1800 N O 7200 N
6. A box is on a ramp inclined at 25° to the horizontal. The coefficient of static friction is .30, and of kinetic friction .20. 1²=30 pe Me=20m a. The box slides down the ramp. b. The box stays on the ramp without slipping. c. The box first slips, but then stays fixed after slowing down. d. We need the mass of the box to answer the question. 3250 www th mg OL M = mg COSTS
8. At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.60 m/s, and an 87.0-kg person feels a 590-N force pressing against his back. What is the radius of the chamber? m
13. Camping equipment weighing 6000 N is palled teo en lako he means of a horizontal 2ope The coefficiont of kinetie frietion is 006 How ich work in done by the campera in pulling the equipnent 1000m if it speedis inereing at the constint rate of 0.20m/s? A. HL2x10 B 18 103 C 30x10 J D 4.2 x 10 E 12 10J ane D
A 1500 kg car rests on a horizontal surface. If the coefficient of friction between the tires and the pavement is 0.01, what is the horizontal force needed to make the car move with CONSTANT SPEED? a. 417N b. 19.6 N c. 147 N d. 159N
d. 69.90 m a. 6.12 m C. 18.36 m b. 12.24 m 20. What weight will a spring scale read for a mass of a 60 kg woman stand on it in an elevator that moves downward with an acceleration of 6.0 m/s ? a. 984 N b. 588 N C. 786 N d. 228 N 11. A wheel 7.0 m in radius accelerates uniformly from 120 rad/min to 360 rad/min in 2.9 s. What is the angular acceleration? a. 2.26 rad/s^2 b. 6.55 rad/s^2 c. 1.38 rad/s^2 d. 2.76 rad/s^2 12. A person pull a 35 kg block 50 m along over a rough, horizontal surface with Hk = 0.30 a constant force Fp = 150 N, which acts at a 30° above the horizontal floor. If the frictional force is 80 N, what is the total net work done? a. 1433 J b. 11295 J c. 1917 J d. 2495 J 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to 15 m/s upward. If the time contact with the sidewalk is 1.25 ms, what is the magnitude of the average force exerted on the superball on the sidewalk? a. 1622.4 N b. 1398.4 N C. 1248 N d. 374.4 N…
QUESTION 4 A system of blocks is shown in the figure. Assume the pulley is frictionless. Which of the following most nearly gives the least value of P required to prevent the system of blocks from sliding to the left? a. 116.91 N O b. 273.95 N O c. 238.80 N d. 146.87 N 200 N 40⁰ μ = 0.2 200 N 15⁰
A 200 kg object stay in rest on a 60 degree slope, the normal force on the object is: a. 200 kg b. 1960 N c. 1697 N d. 490 N e. 980 N