A bowstring behaves like a spring with a spring constant of 420 N/m. It is initially pulled back 30 cm, then takes 0.75 s to pull the bowstring back another 25 cm. How much work was done on the bowstring from 30 cm to 55 cm?

Q: A block of mass 2 kg  attached to a spring lies on a flat surface.    When the block is pulled 5 cm…

A: Given values -  Mass of block = m = 2 kg  Displacement = 5 cm = 0.05 m Force = 270 N  According to…

Q: he surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of…

A: The initial velocity of the surfer, vi = 2.83 m/s The final velocity of the surfer, vf  = 10.4 m/s…

Q: Starting from rest, a 4.2-kg block slides 2.20 m down a rough 30.0° incline. The coefficient of…

A: Given Data: The mass of  a block is, m=4.2 kg The distance at which box slides is, d=2.20 m The…

Q: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +4.0…

A: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +4.0…

Q: A horizontal spring has spring constant k = 100 N/m. How much work is required to compress it from…

A: Hooke's law states that force exerted by a spring is directly proportional to the displacement from…

Q: A person pulls a crate 43.5 meters along a horizontal floor by a constant force 112.3 N, which acts…

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Q: mother pulls her child on a sled across a rough patch of snow. The sled and child have a combined…

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Q: The spring-flex exercise system consists of a spring with one end fixed and a handle on the other…

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Q: The spring-flex exercise system consists of a spring with one end fixed and a handle on the other…

A: Given Data: Natural length of the spring (x) = 48 cm = 0.48 m.Force (F) = 200 N.New length (x') = 66…