Question

Лыжник массой 50 кг движется со скоростью 36 км/ч по выпуклому участку дороги с радиусом кривизны 20 м.определите вес лыжника в средней части выпуклого участка

Answer 1

При движении по выпуклой поверхности ускорение направлено вниз
P=m*g- m*a=m*(g-V^2/R)=50*(10 -100/20)=250 Н

Answer 2

Calculation of Weight on a Convex Section of Road

To determine the weight of a skier on a convex section of road, we need to consider the centripetal force acting on the skier. The centripetal force is provided by the normal force exerted by the road surface on the skier.

The formula to calculate the centripetal force is:

F = m * (v^2 / r)

Where: - F is the centripetal force - m is the mass of the skier - v is the velocity of the skier - r is the radius of curvature of the road

Given: - Mass of the skier (m) = 50 kg - Velocity of the skier (v) = 36 km/h = 10 m/s - Radius of curvature of the road (r) = 20 m

Let's substitute these values into the formula to calculate the centripetal force:

F = 50 kg * (10 m/s)^2 / 20 m

Simplifying the equation:

F = 250 N

Therefore, the centripetal force acting on the skier is 250 N.

To determine the weight of the skier in the middle of the convex section of the road, we need to consider the balance of forces. The weight of the skier is equal to the normal force exerted by the road surface. Since the skier is on a convex section of the road, the normal force will be greater than the weight of the skier.

Therefore, the weight of the skier in the middle of the convex section of the road is less than 250 N.

Unfortunately