Identifying centripetal force for cars and satellites | AP Physics 1 | Khan Academy
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- Опубліковано 19 лис 2017
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Identifying forces or force components acting as the centripetal force for a car driving in a horizontal circle, a car driving in a vertical circle, and a satellite in orbit.
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7:27 wouldn't the car just fall if there is no upward force?
Great examples!
So weird, I actually dreamt i drove on a loop de loop last night!
hahahahaha
I agree with you ... but at the beginning of that example 3:49 you mentioned that at the beginning of the movement the normal force was greater than the weight of the car so net force point to the center
But
firstly, a normal force cannot be greater than the weight force unless an additional force influences from above (this did not happen)
But at the beginning of the movement on this track, the movement of the body must be horizontal in a straight line, then after that the normal force is perpendicular to the direction of the movement to indicate the direction of the center and force the body to move in a circular path.
finally Thanks much for what you do .
Maybe you have an opinion on this or maybe you have moved on...
If the normal force were equal to the force of gravity then the net forces in that perpendicular direction would be balanced. Velocity in the perpendicular direction to the ground would not change. But the car does begin to move upwards in small increments or more precisely is moved toward the center of the loop. So it seems sudden declines and inclines introduce a change to the normal force.
Wow amazing thanks💖
Wow thanks so interesting 😆😆😆😆😆😆
Yeah i Am the first to see this yes
Thx
Khan is a knowledge god
Can some one tell me how the car get the radial friction force to the tyres
Frictional force oppose the direction of moving,you wrote frictional force on moving direction...are you wrong or am i wrong...? Please answer this sir...
He is saying the friction force by the road on the car. The tire pushes the road back and due to Newton's 3rd Law, the road pushes the car forward via friction.
@@sofi9217how is the tire puching th road outward too?
this can't be right.. you completely forgot the centrifugal force which is the only force keeping you on the loop de loop right? I'm confused.. Great video!
Centrifugal force is not real!
hi
0:12 flat earth confirmed
what happened to the short videos? I'm losing you very quickly with the longer videos... please return to the short videos format of 3-4 mins each, demonstrating each idea separately