Q1The motor M of the hoist shown in Fig. 14-16a lifts the 75-lb crate C so that the acceleration of point P is 4 ft/S2. Determine the power that
must be supplied to the motor at the instant P has a velocity of 2 ft/s.
Neglect the mass of the pulley and cable and take E = 0.85

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?