A block of volume 0.55 m cubed floats with a fraction 0.71 of its volume submerged in a
liquid of density 1160 kg/m cubed, as shown in the
figure below.
V

liquid
Find the magnitude of the buoyant force
on the block. The acceleration of gravity is
9.8 m/s?
Answer in units of N.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

How is the ideal mechanical advantage of a wheel and axle calculated?