I don't think the provided solution is correct because it's not dimensionally consistent. The quantity in particular doesn't make sense since it's mixing a distance with a dimensionless constant.
Here's how I think the proper answer should look:
The net force on the box acting perpendicular to the ramp is
where is the magnitude of the normal force due to contact with the ramp and is the magnitude of the box's weight acting in this direction. The net force is zero since the box doesn't move up or down relative to the plane of motion.
The net force acting parallel the ramp is
where is the magnitude of the parallel component of the box's weight, is the magnitude of kinetic friction, and is the acceleration of the box.
From the first equation, we find
and since , we get from the second equation
and with and , we get
Let be the length of the ramp, i.e. the distance that the box covers as it slides down it. Then the box attains a final velocity such that
From the diagram, we see that
and so
Answer:
600 meters
Explanation:
There are 60s in 1 minute so
60s multiply to 10 equals to 600 meters
Answer:
electromagnetic energy uses magnets to form energy they change the magenet because magnets without a electric current dont create energy
Explanation:
Answer:
The normal force experienced by the car is approximately 8223.2 N
Explanation:
The question relates to banking of road where the centripetal force for the circular motion of the vehicle is provided by the horizontal component of the normal reaction
The mass of the vehicle that moves around the curve, m = 900 kg
The incline of the curve, θ = 20°
The speed with which the vehicle moves around the curve, v = 12.5 m/s
The radius of the curve, R = 50 meters
We have;
Where;
θ = The angle of inclination of the road = 20°
N = The normal force experienced by the car
m = The mass of the car = 900 kg
v = The velocity with which the car is moving = 12.5 m/s
R = The radius of the curve around which the vehicle moves = 50 m
The normal force experienced by the car = N ≈ 8223.2 N.