▲ 379 ▼ Is this a rope hanging under a helicopter? (sh.itjust.works) submitted 3 months ago by silverchase@sh.itjust.works to c/science_memes@mander.xyz 84 comments fedilink hide all child comments
[–] OpenStars@discuss.online 1 point 3 months ago (5 children) Which C? permalink fedilink source parent hideshow 5 child comments replies: [–] RunawayFixer@lemmy.world 3 points 3 months ago* Both. The first c when the heli is flying at a constant speed. The 2nd one when it's accelerating. Edit: problem description said constant speed, so that means the first one. permalink fedilink source parent [–] Sam_Bass@lemmy.world 2 points 3 months ago (1 child) C(2) since it is stated that the cable of uniform construction. unfortunately, i have to assume forward motion of the helicopter and that it is not in a vacuum permalink fedilink source parent hideshow 1 child comment replies: [–] nightlily@leminal.space 3 points 3 months ago One has to assume the body of the helicopter is a perfectly spherical cow. permalink fedilink source parent [–] FreddiesLantern@leminal.space 2 points 3 months ago (1 child) I'm gonna say 1st. The propeller blows downwards so it would have that effect on the upper portion of the rope. permalink fedilink source parent hideshow 1 child comment replies: [–] LaLuzDelSol@lemmy.world 2 points 3 months ago That's a fair point but its also unclear how that would actually affect the rope. The rotor blades spin faster on the outside of their sweep, so they are driving the air downwards more powerfully there, although the rope is farther below the blades. permalink fedilink source parent
[–] RunawayFixer@lemmy.world 3 points 3 months ago* Both. The first c when the heli is flying at a constant speed. The 2nd one when it's accelerating. Edit: problem description said constant speed, so that means the first one. permalink fedilink source parent
[–] Sam_Bass@lemmy.world 2 points 3 months ago (1 child) C(2) since it is stated that the cable of uniform construction. unfortunately, i have to assume forward motion of the helicopter and that it is not in a vacuum permalink fedilink source parent hideshow 1 child comment replies: [–] nightlily@leminal.space 3 points 3 months ago One has to assume the body of the helicopter is a perfectly spherical cow. permalink fedilink source parent
[–] nightlily@leminal.space 3 points 3 months ago One has to assume the body of the helicopter is a perfectly spherical cow. permalink fedilink source parent
[–] FreddiesLantern@leminal.space 2 points 3 months ago (1 child) I'm gonna say 1st. The propeller blows downwards so it would have that effect on the upper portion of the rope. permalink fedilink source parent hideshow 1 child comment replies: [–] LaLuzDelSol@lemmy.world 2 points 3 months ago That's a fair point but its also unclear how that would actually affect the rope. The rotor blades spin faster on the outside of their sweep, so they are driving the air downwards more powerfully there, although the rope is farther below the blades. permalink fedilink source parent
[–] LaLuzDelSol@lemmy.world 2 points 3 months ago That's a fair point but its also unclear how that would actually affect the rope. The rotor blades spin faster on the outside of their sweep, so they are driving the air downwards more powerfully there, although the rope is farther below the blades. permalink fedilink source parent
