If the drag force on a sphere, fd, can be expressed as fd = f(d, v, rho, µ), in [mlt −2 ] (8) where d is the sphere diameter in units of [l], v is the free stream velocity in units of [lt −1 ], rho is the fluid density in units of [ml−3 ], and µ is the fluid viscosity in units of [ml−1t −1 ]. use the buckingham-pi theorem to determine a suitable set of dimensionless parameters.

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

What is the mass of the same rock on the earth

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)