A child is walking eastward along a flat sidewalk. She is pulling a wagon behind her with a pulling force F applied to the handle. The handle makes an angle of 40° with the horizontal. Rather than drawing a slanted arrow in the free-body diagram for the wagon, which two arrows could be substituted for F? A. an upward arrow labeled Fsin(40°), and an eastward arrow labeled Fcos(40°) B. An upward arrow labeled Fcos(40°), and an eastward arrow labeled Fsin(40°) C. Two eastward arrows, one labeled Fsin(40°) and the other labeled Fcos(40°) D. An upward arrow labeled Fsin(40°), and a downward arrow labeled Fsin(40°)
Answers: 2
Physics, 22.06.2019 00:40, naomicervero
The rigid beam is supported by the three suspender bars. bars ab and ef are made 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 (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
Answers: 1
Physics, 22.06.2019 14:40, kellypechacekoyc1b3
Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
Answers: 3
A child is walking eastward along a flat sidewalk. She is pulling a wagon behind her with a pulling...
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