Use Hooke’s Law to determine the work done by the variable force in the spring problem. Six joules of work is required to stretch a spring 0.5 meter from its natural length. Find the work required to stretch the spring an additional 0.25 meter.

It takes a force of 21,882 lb to compress a coil spring assembly from its free height of 6 inches to its fully compressed height of 3 inches. a. What is the assembly's force constant? b. How much work does it take to compress the assembly the first half inch? the second half inch? Answer to the nearest in-lb. a. k= lb/in

Please make sure answers are clear n easy to read. Please do it in white paper

A box of mass m=3.0kg slides down a smooth incline plane of 5.0m long with angle. Please find the speed when the box slides to the bottom of this incline. We assume the box starts to slide at rest.

Please show all work:  50 meters of a circular observation tube with a flat glass window at the bottom is submerged in water as shown in the image. Assuming P(h)= 9800h N/m2, calculate the total force due to hydrostatic pressure on the exterior of the tube. The radius of the tube is 1 meter.