Physics, 19.10.2019 11:20 emmmmmmaaaa
Two friends, joe and sam, go to the gym together to strength train. they decide to start off with an exercise called flat bench press. lying flat on a bench with his arms in an extended position, each friend slowly lowers (to his chest) and then raises a barbell back to the starting position. they start off by using a 31.5 kg barbell. joe is taller than sam, which means joe's arms are 70.0 cm long whereas sam's are 59.0 cm . calculate the work done by joe when he raises the barbell to finish one repetition. the acceleration due to gravity is 9.81 m/s2 .
Answers: 2
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
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Physics, 22.06.2019 12:30
Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?
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Physics, 22.06.2019 20:00
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Physics, 22.06.2019 21:00
How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation
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Two friends, joe and sam, go to the gym together to strength train. they decide to start off with an...
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