An 80.0-kg skydiver jumps out of a balloon at an altitude of 1 000 m and opens the parachute at an altitude of 200.0 m. (a) Assuming that the total retarding force on the diver is constant at 50.0 N with the parachute closed and constant at 3 600 N with the parachute open, what is the speed of the diver when he lands on the ground? (b) Do you think the skydiver will get hurt? Explain. (c) At what height should the parachute be opened so that the final speed of the skydiver when he hits the ground is 5.00 m/s? (d) How realistic is the assumption that the total retarding force is constant? Explain.

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A: According to the work-energy theorem, the changing in kinetic energy of the crate must be equal to…

Q: Starting from rest, a 99-kg firefighter slides down a fire pole. The average frictional force…

A:

Q: A speedboat weighing 644 lbs is powered by a constant force of 40 lbs. Friction between the boat and…

A: w=644 lbswind resistance:Rw∝vRw=kv....1

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Q: (7.3.10) A 2.0kg particle moves along the +x-axis, from x = 4.0m to x = 16.0m, while acted on by a…

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A: The figure shows the free body diagram of the book. The figure shows the free body diagram of the…

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A: We draw a diagram according to the question. Also take  dotted line below the figure as a reference…

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A: Analyze the free body diagram. Consider the rightward direction along the incline plane to be…

Q: An m=60 kg diver jumps off a diving board h=3 m above the water that acts like an ideal spring with…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 2. A 3.0 kg particle is pushed with a force given below. If its speed at x = 2 m is 1.70 m/s what is…

A: work done between x=2 m to x =4m can be simply found by finding the area of given graph between…

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Q: A 4.0-kg particle moving along the x-axis is acted upon by the force whose functional form appears…

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A:

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A: Given that: m=1.5 kgv=4 m/sf(x)=-(10+40x) Nd=?Wf=Work done by friction

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A: Solution:

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A: Given: mass of the roller coaster m = 1000Kg            height of the hill h = 97m Find: Maximum…

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A: Given data  Mass of the box, m=3 kg Angle, θ=390 Initial speed, u=16 m/s

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A: The given data are: M=30.6+8.5 kg=39.1 kgv=6.4 m/sθ=15.1° Here, M denotes the combined mass, v…

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A: A 92 kg firefighter slides down a fire pole.and avarage friction force exerted on him by the pole…

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A: Given information: The mass of the car (m) = 2.1×103 kg The length of the drive way (d) = 4.9 m The…

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Q: A 1700 kg car starts up a 130 m long hill at a speed of 20.0 m/s. If the propulsive force (up the…

A: Work done by gravity  Wg = - mgh = - 1700×9.81×48.1 = -802163.7 J  Work done by propulsive force  Wp…

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A: According to work energy theorem,   Work Done= Final kinetic energy- Initial kinetic energy But work…

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.