A 5-m steel beam is lowered by means of two cables unwinding at the same speed from overhead cranes. As the beam approaches the ground, the crane operators apply brakes to slow the unwinding motion.
At the instant considered, the deceleration of the cable attached at B is 2.5 m/s2 , while that of the cable attached at D is 1.5 m/s2 .
Determine
(a) the angular acceleration of the beam,
(b) the acceleration of points A and E.
Answers: 3
Physics, 21.06.2019 18:00, heyhay5748
Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s
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Physics, 22.06.2019 04:20, livigrace9004
Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f
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Physics, 22.06.2019 07:50, dimondqueen511
Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1
Answers: 1
Physics, 22.06.2019 10:00, pantojaiv90
A2k pendulum has a speed of 1 m/s at a height of 1/2 meter
Answers: 3
A 5-m steel beam is lowered by means of two cables unwinding at the same speed from overhead cranes....
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