To solve this problem, we apply the concepts related to the sum of forces and balance in a diagram that will be attached, in order to identify the behavior, direction and sense of the forces. The objective is to find an expression that is in terms of the mass, the angle, the coefficient of friction and the length that allows us to identify when the ladder begins to slip. For equilibrium of the ladder we have,



Now we have that


And for equilibrium of the two forces we have finally

Rearranging to find the distance,


So if we have that the frictional force is equivalent to




With this value we have that


Therefore can go around to 5.19m before the ladder begins to slip.
1 mile = 1.609344 km
x miles = 95 km
x = 95 : 1.609344 = 59.03
Answer: 53.09 mph
Lực hút trái đất gọi Là trọng lực
Answer:
The speed of a turtle is 4m/s
Explanation:
speed = distance/time
distance = 100m
time = 25s
s = 100/25
= 4m/s