The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2 determine the maximum value of p if the allowable stress is (o-allow) sit_200 mpa for the steel and (sigma_ailow)a| = 150 mpa for the aluminum. e_st = 200 gpa, e_al = 70 gpa.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?