(II) A child on a sled reaches the bottom of a hill with a velocity of 10.0 m/s and travels 25.0 m along a horizontal straightaway to a stop. If the child and sled together have a mass of 60.0 kg, what is the average retarding force onthe sled on the horizontal straightaway?

Q: (II) A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: (II) Drag-race tires in contact with an asphalt surfacehave a very high coefficient of static…

A:

Q: (I) Suppose you are standing on a train accelerating at 0.20 g. What minimum coefficient of static…

A:

Q: (II) A 2.0-kg silverware drawer does not slide readily. The owner gradually pulls with more and more…

A:

Q: (I) A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor.…

A: When a frictional force acts between two bodies in contact but are not moving with respect to each…

Q: (II) Figure 4–53 shows a block (mass ma) on a smooth hori- zontal surface, connected by a thin cord…

A:

Q: (1b) A worker grabs a 68 kg crate across a floor by Pulling on a rope inclined 17º above the…

A: Here given a workergrabs a 68 kg crate.The rope inclined 17° above the horizontal. The coefficient…

Q: A child on a sled comes flying over the crest of a small hill, as shown in Fig. 5–32. His sled does…

A: When the child is on a level surface, the normal force between its chest and sled is equal to the…

Q: Three mountain climbers who are roped together in a line are ascending an icefield inclined at 31.0°…

A:

Q: (II) What will a spring scale read for the weight of a 58.0-kgwoman in an elevator that moves (a)…

A:

Q: A bear sling, Fig. 4–40, is used in some national parks for placing backpackers' food out of the…

A: A bear sling is used in some national parks for placing backpacker’s food out of the reach of bears.

Q: (II) A 14.0-kg bucket is lowered vertically by a rope in which there is 163 N of tension at a given…

A:

Q: (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…

A:

Q: (II) (a) A box sits at rest on a rough 33° inclined plane.Draw the free-body diagram, showing all…

A:

Q: (II) The cable supporting a 2125-kg elevator has a maximumstrength of 21,750 N. What maximum upward…

A:

Q: (II) A car can decelerate at -3.80 m/s2 without skidding when coming to rest on a level road. What…

A: tIt is given that,

Q: (82) Shown below is a body of mass 1.0 kg under the influence of the forces F, F, and mg. If the…

A: SOlution: given that m = 1 kg a = 20 m/s2

Q: The 70.0-kg climber in Fig. 4-72 is supported in the “chimney" by the friction forces exerted on his…

A:

Q: (II) A particular race car can cover a quarter-mile track (402m) in 6.40s starting from a…

A: We have to determine the acceleration experienced by the driver, and the horizontal force exerted by…

Q: (II) On an icy day, you worry about parking your car in your driveway, which has an incline of 12°.…

A: The freebody diagram of the given situation is represented as,

Q: (II) A 12.0-kg monkey hangs from a cord suspended fromthe ceiling of an elevator. The cord can…

A:

Q: . (II) A flatbed truck is carrying a heavy crate. The coefficient of static friction between the…

A: It is given that,

Q: (III) A person jumps from the roof of a house 2.8 m high.When he strikes the ground below, he bends…

A:

Q: (I) If the coefficient of kinetic friction between a 22-kg crate and the floor is 0.30, what…

A:

Q: (II) Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig.…

A: let1 m1=65kg       m2=125kg      F= 650 N Friction force between m1 and surface = f1  therefoe, F1…

Q: (II) The coefficient of static friction between hard rubber and normal street pavement is about…

A: Given - The coefficient of static friction between  hard rubber and normal street pavement , μs =…

Q: A 600 Kg car is moving on a level road at 30 m/s. (a) How large is the retarding force(assumed…

A:

Q: c) The floor of a railroad flatcar is loaded with loose crates having a coefficient of static…

A: Solution:- given μs = 0.25u = 48 km/hr=48×518 = 13.33 m/s

Q: (II) Figure 4–45 shows a block (mass m^) on a smooth hori- zontal surface, connected by a thin cord…

A: The block of mass mA is placed on smooth horizontal table and block of mass mB is hanging from…

Q: (II) A woman stands on a bathroom scale in a motionless elevator. When the elevator begins to move,…

A: m=Mass of womang=Acceleration due to gravity=9.81 m/s2(mg)a=Apparent weight of the…

Q: (II) At the instant a race began, a 65-kg sprinter exerted a force of 720 N on the starting block at…

A:

Q: (II) Police investigators, examining the scene of an accidentinvolving two cars, measure 72-m-long…

A: Given: Distance d = 72 m Let m be the mass of the car. Coeff. Of kinetic friction between rubber and…

Q: (II) A 1280-kg car pulls a 350-kg trailer. The car exerts a horizontal force of 3.6x103  N against…

A: Given:-           mass of the car m1 = 1280 kgmass of the trailer m2 = 350 kgexcerted force by car F…

Q: (II) A train locomotive is pulling two cars of the same mass behind it, Fig., 4–51. Determine the…

A: Draw the free-body diagram of the locomotive car 2 as:

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.