Jana lifted a 200-newton weight over her head to a distance of 2 meters above the ground. How much work did she do?
1 answer:
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Answer:
A skater glides along a circular path. She defines a certain point on the circle as her origin. Later on, she passes through a point at which the distance she has traveled along the path from the origin is smaller than the magnitude of her displacement vector from the origin.
So here in circular motion of the skater we can see that the total path length of the skater is along the arc of the circle while we can say that displacement is defined as the shortest distance between initial and final position of the object.
So it is not possible in any circle that arc-length is less than the chord joining the two points on the circle
As we know that arc length is given as
length of chord is given as
so here
so we have
Answer: See below
Explanation:
<u>Given:</u>
Mass of the Mercedes-Benz (m) = 1700 kg
Inclination of the road (θ) = 15.0
<em>The free body diagram is shown in figure attached below</em>
<em />
a) The normal force is equal to the cos component of the weight of the car.
b) The static force will be equal to the weight's sin component.
