A spring extends elastically by 10 cm when a force of 20 N is applied to it. What force would be needed to extend the spring by 5 cm?

A scale stretches 7 cm for a 7 kg load. How far apart are the 0.5 kg marks on it to the nearest mm?

A 1.2 m spring is standing on one end. A 60-kg block is placed on the spring, compressing it. What is the length of the compressed spring if spring constant k is 500 N/m? y Lo Yeq 0 www Before Compressed After

A cylindrical tank, shown in the figure, has height 8 m and radius 4 m. Suppose the water tank is half-full of water. Determine the work required to empty the tank by pumping the water to a level 6 m above the top of the tank. Use 1000 kg/m³ for the density of water and 9.8 m/s² for the acceleration due to gravity. 4 m Draw a y-axis in the vertical direction (parallel to gravity) and choose the center of the bottom of the tank as the origin. For 0 ≤ y ≤8, find the cross-sectional area A(y). A(y) = (Type an exact answer, using as needed.) 8 m

Need in typing only or word file (no handwriting and no image, NO Plagiarism)

A basket of negligible mass hangs from the school roof by a spring 5.0m long, It hangs 6.0m above the ground. Three students of equal mass, gently lower themselves into the basket and the spring stretches 1.0m for each one. They climb out and then one climbs a ladder on the roof and steps off, landing in the basket and stretching the spring until it just touches the ground. How high was the ladder above the rooftop?

A block of mass 12 kg slides down a frictionless inclined plane inclined at 35° with no initial velocity and is stopped by a spring of k= 3.0 * 10^4 N/m. The block slides a total distance of d = 3 m from the point where it was released to the point where it stops due to the resistance of the spring. How much is the spring compressed when the block stops?

H6.

27.The potential energy function for either one of the two atoms in a diatomic molecule is often approximated by U (x)=-a/x¹² -b/x6 where x is the distance between the atoms. (a) At what distance of seperation does the potential energy have a local minimum (not at x = ¥)?(b) What is the force on an atom at this separation? (c) How does the force vary with the separation distance? Solution a. -2a b 1/6 ; b. 0; c. ~x6

A block of mass m 2.00 kg slides along a horizontal table with speed vo 9.50 m/s. At x = 0 it hits a spring with spring constant k95.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by u 0.100. How far has the spring compressed by the time the block first momentarily comes to rest? wwwww.wl Number 9.50 m/s m Ar ?