EP PHYSICS F/SCI.+ENG.W/MOD..-MOD.MAST.
5th Edition
ISBN: 9780134402635
Author: GIANCOLI
Publisher: PEARSON CO
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(2) Four dollies (A, B, C and D) on a plane are connected by three ropes, ropes 1, 2 and
3, as shown in the diagram. The rightmost dolly is powered and pulled in the overall
rightward direction by a force of magnitude F. The 4 dollies accelerate with the same
acceleration. The friction between the ground and the dolly is negligible. At this point,
answer the following questions. The rope does not stretch and the mass of the rope is
neglected.<
台車D
m4
ロープ3
m3
台車C
ロープ2
m2
台車B
ロープ1
m1
台車A
F
At this point, increase the strength of the F. Which rope breaks first. The ropes are all of
the same strength.<
(3) With all four trolleys of the same mass m, establish the equation of motion for each
trolley in the right-hand direction of the paper. The right direction of the paper is the x-
direction and only the equation of motion in the x-direction is derived. Also, include the
tension of the rope between A and B as the tension of the rope between B and C and the
tension of the rope between C and…
11.)A 25 kg block is to be pushed down a 7.0 degree incline and should have a speed of 18m/s at the end of 72 meter. Coefficient of kinetic friction is 0.10. How much force is needed to push it down?
AT an accident scene on a level road, investigators measure a car's slid mark to be 78 m long. It was a rainy day and the coefficient of friction was estimated to be .30. (a) Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. (b) Why does the car's mass not matter? (c) What is wrong with a car that skids?
Chapter 5 Solutions
EP PHYSICS F/SCI.+ENG.W/MOD..-MOD.MAST.
Ch. 5.1 - If s = 0.40 and mg = 20 N, what minimum force F...Ch. 5.1 - Prob. 1BECh. 5.2 - Prob. 1CECh. 5.2 - If the radius is doubled to 1.20m but the period...Ch. 5.3 - Prob. 1EECh. 5.3 - A rider on a Ferris wheel moves in a vertical...Ch. 5.4 - Prob. 1GECh. 5.4 - Can a heavy truck and a small car travel safely at...Ch. 5.5 - When the speed of the race car in Example 516 is...Ch. 5 - A heavy crate rests on the bed of a flatbed truck....
Ch. 5 - A block is given a push so that it slides up a...Ch. 5 - Cross-country skiers prefer their skis to have a...Ch. 5 - Prob. 4QCh. 5 - It is not easy to walk on an icy sidewalk without...Ch. 5 - Why is the stopping distance of a truck much...Ch. 5 - A car rounds a curve at a steady 50 km/h. If it...Ch. 5 - Will the acceleration of a car be the same when a...Ch. 5 - Describe all the forces acting on a child riding a...Ch. 5 - A child on a sled comes flying over the crest of a...Ch. 5 - Sometimes it is said that water is removed from...Ch. 5 - Technical reports often specify only the rpm for...Ch. 5 - A girl is whirling a ball on a string around her...Ch. 5 - The game of tetherball is played with a ball tied...Ch. 5 - Astronauts who spend long periods in outer space...Ch. 5 - A bucket of water can be whirled in a vertical...Ch. 5 - A car maintains a constant speed v as it traverses...Ch. 5 - Why do bicycle riders lean in when rounding a...Ch. 5 - Why do airplanes bank when they turn? How would...Ch. 5 - For a drag force of the form F = bv, what are the...Ch. 5 - Suppose two forces act on an object, one force...Ch. 5 - Prob. 2MCQCh. 5 - Prob. 3MCQCh. 5 - Prob. 4MCQCh. 5 - Prob. 5MCQCh. 5 - Prob. 6MCQCh. 5 - Prob. 7MCQCh. 5 - Prob. 8MCQCh. 5 - Prob. 9MCQCh. 5 - Prob. 12MCQCh. 5 - Prob. 13MCQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - (I) Suppose you are standing on a train...Ch. 5 - (I) The coefficient of static friction between...Ch. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - (II) A car can decelerate at 3.80 m/s2 without...Ch. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - (II) A box is given a push so that it slides...Ch. 5 - (II) A skier moves down a 27 slope at constant...Ch. 5 - (II) A wet bar of soap slides freely down a ramp...Ch. 5 - Prob. 13PCh. 5 - Prob. 14PCh. 5 - Prob. 15PCh. 5 - (II) Police investigators, examining the scene of...Ch. 5 - (II) Piles of snow on slippery roofs can become...Ch. 5 - Prob. 18PCh. 5 - (II) Two crates, of mass 65 kg and 125 kg, are in...Ch. 5 - Prob. 20PCh. 5 - (II) A crate is given an initial speed of 3.0 m/s...Ch. 5 - (II) A flatbed truck is carrying a heavy crate....Ch. 5 - Prob. 23PCh. 5 - Prob. 24PCh. 5 - (II) A package of mass m is dropped vertically...Ch. 5 - (II) Two masses mA = 2.0 kg and mB = 5.0 kg are on...Ch. 5 - Prob. 27PCh. 5 - (II) (a) Suppose the coefficient of kinetic...Ch. 5 - Prob. 29PCh. 5 - (II) For two blocks, connected by a cord and...Ch. 5 - Prob. 31PCh. 5 - (III) A 3.0-kg block sits on top of a 5.0-kg block...Ch. 5 - (III) A 4.0-kg block is stacked on top of a...Ch. 5 - (III) A small block of mass m rests on the rough...Ch. 5 - Prob. 35PCh. 5 - Prob. 36PCh. 5 - Prob. 37PCh. 5 - (I) A jet plane traveling 1890 km/h (525 m/s)...Ch. 5 - Prob. 39PCh. 5 - Prob. 40PCh. 5 - Prob. 41PCh. 5 - (II) How fast (in rpm) must a centrifuge rotate if...Ch. 5 - Prob. 43PCh. 5 - (II) Redo Example 511, precisely this time, by not...Ch. 5 - (II) Highway curves are marked with a suggested...Ch. 5 - Prob. 46PCh. 5 - (II) At what minimum speed must a roller coaster...Ch. 5 - Prob. 48PCh. 5 - Prob. 49PCh. 5 - Prob. 50PCh. 5 - Prob. 51PCh. 5 - Prob. 52PCh. 5 - Prob. 53PCh. 5 - Prob. 54PCh. 5 - Prob. 55PCh. 5 - Prob. 56PCh. 5 - Prob. 57PCh. 5 - (II) Two blocks with masses mA and mB, are...Ch. 5 - Prob. 59PCh. 5 - Prob. 60PCh. 5 - (II) A pilot performs an evasive maneuver by...Ch. 5 - (III) The position of a particle moving in the xy...Ch. 5 - (III) If a curve with a radius of 85 m is properly...Ch. 5 - Prob. 65PCh. 5 - Prob. 67PCh. 5 - Prob. 68PCh. 5 - Prob. 69PCh. 5 - (III) An object of mass m is constrained to move...Ch. 5 - (I) Use dimensional analysis (Section 17) in...Ch. 5 - (II) The terminal velocity of a 3 105 kg raindrop...Ch. 5 - (III) Determine a formula for the position and...Ch. 5 - (III) The drag force on large objects such as...Ch. 5 - (II) An object moving vertically has v=v0at t = 0....Ch. 5 - Prob. 77PCh. 5 - Prob. 78PCh. 5 - (III) A motorboat traveling at a speed of 2.4 m/s...Ch. 5 - A coffee cup on the horizontal dashboard of a car...Ch. 5 - Prob. 81GPCh. 5 - Prob. 82GPCh. 5 - Prob. 83GPCh. 5 - A flat puck (mass M) is revolved in a circle on a...Ch. 5 - In a Rotor-ride at a carnival, people rotate in a...Ch. 5 - Prob. 86GPCh. 5 - Prob. 87GPCh. 5 - The 70.0-kg climber in Fig. 550 is supported in...Ch. 5 - A small mass m is set on the surface of a sphere,...Ch. 5 - Prob. 90GPCh. 5 - Prob. 91GPCh. 5 - Prob. 92GPCh. 5 - Prob. 93GPCh. 5 - Prob. 94GPCh. 5 - Prob. 95GPCh. 5 - A car is heading down a slippery road at a speed...Ch. 5 - Prob. 97GPCh. 5 - A banked curve of radius R in a new highway...Ch. 5 - Earth is not quite an inertial frame. We often...Ch. 5 - Prob. 100GPCh. 5 - Prob. 101GPCh. 5 - A car starts rolling down a 1-in-4 hill (1-in-4...Ch. 5 - The sides of a cone make an angle with the...Ch. 5 - Prob. 104GPCh. 5 - A ball of mass m = 1.0 kg at the end of a thin...Ch. 5 - Prob. 106GP
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- During World War 2, a military parachutist fell 0.37km from an airplane without being able to open his chute, but luckily was able to land in snow, suffering only with minor injuries. Assume that his speed at impact was 56 m/s, and his mass, including his gear was 85kg, and that the magnitude of force on him from the snow was at the survivable limit of 1.2 x 10^5 N. What is the magnitude of the impulse on him from the snow? (Answer in one decimal place, no unit) Sample answer: 1.1x10^3 (Enter the 1.1 only) UNIT: kg-m/s Add your answerarrow_forwardDuring world war 2, a military parachutist fell 0.37km from an airplane without being able to open his chute, but luckily was able to land in snow, suffering only with minor injuries. Assume that his speed at impact was 56m/s, and his mass, including his gear was 85kg, and that the magnitude of force on him from the snow was at the survivable limit of 1.2 x 10^5 N. What is the magnitude of the impulse on him from the snow? (Answer in one decimal place, no unit) sample answer: 1.1 x 10^3 (enter the 1.1 only)arrow_forwardA softball having a mass of 0.25 kg is pitched horizontally at 120 km/h By the time it reaches the plate, it may have slowed by 10%. Neglecting gravity, estimate the average force of air resistance during a pitch. The distance between the plate and the pitcher is about 15 m.arrow_forward
- (a) Calculate the force needed to bring a 800 kg car to rest from a speed of 85.0 km/h in a distance of 130 m (a fairly typical distance for a nonpanic stop). ............N(b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in part(b) to the force in part(a)..............(force in part (b) / force in part (a))arrow_forwardA buffalo is capable of producing 250 watts of power. If it pulls a plow with a 50-kg force,determine the inclination (degree) of this force if both the buffalo and the plow movetogether at approximately 3.50 kpharrow_forward(a) Calculate the force (in N) needed to bring a 950 kg car to rest from a speed of 90.0 km/h in a distance of 110 m (a fairly typical distance for a non-panic stop). (b) Suppose instead the car hlts a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a) force In (b) force in (a)arrow_forward
- Hang the spring balance on the right side of the lever at the 10 mark and pull the spring balance so that the lever comes into a horizontal position. (ii) Read the indicated value of force meter and record it in Table 1 on the Results page. (iv) Move the load successively to the 8, 6, 4 and 2 marks on the left side and measure the force for each position and record it in Table 1 on the Results page. Question – 1: Using the mass m, calculate the load (force) and record it above the table – 1. Question – 2: From the distance between the marks used (2 cm each), calculate the length of the load arm di and the force arm di in cm and add these values to the result tables. Question – 3: Calculate the products L × di und F x dh and record these values in the result tables. Mass = 100 g, Load (L) = 980 N TABLE - 1 Objects di (cm) L x di (Ncm) F (N) d2 (cm) Fx d2 (Ncm) Left Right side side Load Force 10 10 1.0 8 10 0.78 6 10 0.58 4 10 0.40 2 10 0.20arrow_forward(11%) Problem 4: Consider a bowling ball of mass M attached to two ropes. One rope is being pulled horizontally. The second rope is tied to the ceiling (see figure) and is at a 45° with respect to the ceiling.The bowling ball is stationary, гореarrow_forwardA block of weight w = 40.0 N sits on a frictionless inclined plane, which makes an angle θ = 24.0∘ with respect to the horizontal, as shown in the figure. (Figure 1) A force of magnitude F = 16.3 N , applied parallel to the incline, is just sufficient to pull the block up the plane at constant speed.arrow_forward
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