Experiments using “optical tweezers” measure the elasticity of individual DNA molecules. For small enough changes in length, the elasticity has the same form as that of a spring. A DNA molecule is anchored at one end, then a force of 1.5 nN (1.5 x 10-9 N) pulls on the other end, causing the molecule to stretch by 5.0 nm (5.0 x 10-9 m). What is the spring constant of that DNA molecule?

Q: 50. The work done in stretching an elastic string of natural length 5 m and modulus of elasticity…

A: Work done is the difference of elastic potential energy stored in form of elastic potential energy…

Q: our biceps muscle is attached to your elbow by the distal biceps tendon. An average adults tendon…

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Q: A spring with spring constant 94 N/m and rest length 27.2 cm is used to pull a wooden block of…

A: GIven data The spring constant is given as k = 94 N/m. The rest length is given as l = 27.2 cm. The…

Q: t's a beautiful sunny day and you decide to go fishing for small crappies. Instead a very large…

A: Write the given values of this problem. a=4.2 m/s2F=25 pounds or 111.2 N

Q: For elastic objects, the amount of elastic potential energy is      directly proportional to the…

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Q: A spring is 16.5 cm long when it is lying on a table. One end is then attached to a hook and the…

A: Ans:- Image-1

Q: A 2.35-kg uniform bar oflength l = 1.30 m is heldin a horizontal position bythree vertical springs…

A: a)Weight of the bar = mxg = 2.35×9.8 = 23.03 N

Q: Corda Peso

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Q: A 90 cm  long spring has a force applied to it. The spring is stretched 25 cm by the force. The…

A: The equation for the magnitude of the force applied is

Q: A student in a physics lab is asked to classify two springs. Right away, they notice some…

A: Given data: U1 = 10.0 J x1 = 12.0 cm U2 = 20.0 J x2 = 3.00 cm Required: The ratio of the two spring…

Q: The graphs shown show the magnitude F of the force exerted by a spring as a function of the distance…

A: given   The graphs shown show the magnitude F of the force exerted by a spring as a function of the…

Q: I attach a metal block to a vertical spring and it stretches by 6 cm. If I replace the block with…

A: If the mass is double then it also means the weight is also doubled. In this case the weight acts as…

Q: A large toy car is pushed horizontally by a spring, and the spring has a spring constant of 135 N/m.…

A: Spring constant K = 135  N/m  Let the mass of the toy car be m  Compression in spring is Xi = 0.055…

Q: A 0.523 kg mass hung from a spring stretches the spring by an amount 0.290 m. (a) (b) (a) How much…

A: Ans:- Image-1

Q: A block with weight w = end of a vertical spring with a spring constant k. The spring is stretched…

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Q: A rubber band has a spring constant of 22 N/m. If you stretch it by 0.3 m, what is the magnitude of…

A: Given data:  Spring constant (k) = 22 N/m Stretched by distance (x) = 0.3 m Required:  The force due…

Q: .) A spring has a spring stiffness constant kk of 70.0 N/m. How much must this spring be compressed…

A: Given: The spring constant is 70 N/m. The stored energy in the spring is 50 J.

Q: What mass must be added to a spring with k = 80 N/m to stretch the spring 15.0 cm? O A) 1200 kg B)…

A: Given data: Spring constant is, k=80 N/m. Stretching distance is, x=15.0 cm=0.15 m.

Q: 50 N/m |0.5 kg X = -0.3 m X = 0m X = 0.3 m A block of mass 0.5 kg on a horizontal surface is…

A: We will use Hooke's Law for this :-                  F = -k x   Negative sign denotes that the force…

Q: 2. (Ch. VII, Exercise 8) A block of mass m is attached to a spring, spring constant k, and is pulled…

A: Given : spring constant k            initial position of the block , x = A            mean position…

Q: A 1.5 kg crate drops from a height of 2.0 m onto an industrial spring scale whose elastic constant…

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Q: A 1.0 m long board is suspended by two springs from a horizontal ceiling, with one spring at each…

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Q: Thank you!

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Q: A bar weighing 26.0 N is supported horizontally on each end by two hanging springs, each 15.0 cm…

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Q: You are asked to design spring bumpers for the walls of a parking garage. A freely rolling 1300 kgkg…

A: Kinetic energy : Kinetic energy of an object is the measure of the work an object can do by virtue…

Q: The force required to compress a non-standard spring as a function of displacement from equilibrium…

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Q: In a needle biopsy, a narrow strip of tissue is extracted from a patient with a hollow needle.…

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Q: The length of the Achilles tendon increases 0.500 cm when the force exerted on it by the muscle…

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Q: , x' A A- 1 Normal 1 No Spac... Heading 1 Heading 2 Title ont Paragraph Styles 4. A steel spring is…

A: Here there are two forces acting opposite to each other, the weight of the monkey acting downwards…

Q: A wire is stretched 3 mm by force of 150 N. Assuming the elastic limit is not exceeded, the force…

A: Given data: Stretch in wire (x) = 3 mm Force (F) = 150 N New stretch (x1) = 5 mm Required: New force…

Q: A spring with a spring constant of k = 15 N/m has vertically from the ceiling. You attach a 2kg…

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Q: This problem is extra and is not part of the homework. So, if you solve it correctly, you'll get 2…

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Q: Two springs, with force constants k1=140N/m and k2=275N/m, are connected in series, as shown in the…

A: Answer:  Given  K1=140 N/m            K2=275 N/m   mass m=0.5 kg…

Q: A large toy car is pushed horizontally by a spring, and the spring has a spring constant of 135 N/m.…

A:

Q: To measure the static friction coefficient between a 1.40-kg block and a vertical wall, a spring (k…

A:

Q: A spring is 17 cm long when it is lying on a table. One end is attached to a hook and the other end…

A:

Q: A spring (k = 1300 N/m) is used to stop a 1320 kg vehicle initially traveling at 4.1 m/s. How…

A: Given data:  Spring constant (k) = 1300 N/m Mass (m) = 1320 kg Initial Velocity (v0) = 4.1 m/s Final…

Q: ornament of mass 40.6 g is attached to a vertical ideal spring with a force constant (spring…

A: Given Mass m = 40.6 × 10-3 kg Spring constant k = 45.6 N/m

Q: 9. A spring that has a force constant (k = 800 N/m) is mounted as shown in the figure (a). The…

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Q: The figure shows a conical pendulum, in which a small object at the lower end of the string moves in…

A: Given:mass of an object, mTension in the string, Tangle θ = sin-1rLω is the angular velocity…

Q: A force of 30 N stretches a very light ideal spring 0.37 m from equilibrium. What is the force…

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Q: A spring with original length of 35cm is pulled by a force 13N, stretching it to 38cm. Determine the…

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Q: A spring with spring constant 150 N/m and rest length 13.6 cm is used to pull a wooden block of…

A: The spring force is the force exerted by a compressed or stretched spring upon an object that is…

Q: A 2.50-kg uniform bar of length e = 1.30 m is held in a horizontal position by three vertical…

A: Given,

Q: 5.A spring of force constant k is cut into two pieces such that one piece is double the length of…

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Q: -3m- 4 m www kA-30 N/m 3m KAc-20 NAm Figure (1) Mass = 11 kg For figure (1): 1- What is the force…

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Q: Consider a spring that is stretched 3 cm when a 10 N force is applied. How far will it be stretched…

A: Given , when F1 = 10 N , x1 = 3cm  And F2 = 25 N , then x2 = ?

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.