The small piston of a hydraulic lift (see figure below) has a cross-sectional area of 2.90 cm?, and its large piston has a cross-sectional area of 198 cm2. what downward force of magnitude F, must be applied to the small piston for the lift to raise a load whose weight is F.- 15.2 kN?

Please provide solution with answers mentioned

Compute the total elongation caused by an axial load of 100 kN applied to a flat bar 20 mm thick, tapering from a widtherios AD of 120 mm to 40 mm in a length of 10 m as shown in figure. Assume E = 200 GPa. 20 mm T + 20 mm 20 mm thick 10 m

A box with a mass of 5 kg is moving down the inclined plane at a constant speed of 6 m/s. The coefficient of friction between the box and the surface of the incline is us = 0.25 and µ = 0.15. At the bottom of the incline, a spring is present to stop the box. The spring constant is k = 4 N/mm. What is the maximum force in the spring after the box hits it? 5 kg, 6 m/s m- 35⁰ 400000