An input for of 80 N is used to lift an object weighing 240 N with a system of pulleys. How far must the rope around the pulleys
1 answer:
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Answer:
162.5 m is the distance traveled by an object.
Explanation:
Given that,
An object's constant acceleration (a) is .
The time (t) it traveled is 5 seconds.
The object is at rest that is "initial velocity" (u) is 0 m/s.
To find the distance traveled use the below formula,
Where, "s" is distance traveled, "u" is initial velocity, "a" is acceleration and "t" is time taken.
Substitute the given values in the above formula,
s = 162.5 m
Therefore, distance traveled is 162.5 m.
Answer:
v = 8.72 m/s
Explanation:
To find the speed of the raindrop joint to the mosquito, you take into account the momentum conservation law for an inelastic collision. Before the collision the total momentum of raindrop and mosquito must be equal to the total momentum of both raindrop and mosquito after the collision.
(1)
v1: speed of the mosquito before the collision= 0 m/s (it is at rest)
v2: speed of the raindrop before the collision = 8.9 m/s
m1: mass of the mosquito
m2: mass of the raindrop = 50m1 (50 time more massive that the mosquito)
v: speed of both raindrop and mosquito after the collision
You solve the equation (1) for v and replace the values of the rest of the parameters:
hence, after the inelastic collision the speed of the raindrop andmosquito is 8.72 m/s