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Ivenika [448]
3 years ago
5

A block on the end of a spring is pulled to position x 5 A and released from rest. In one full cycle of its motion, through what

total distance does it travel

Physics
1 answer:
vesna_86 [32]3 years ago
5 0

Answer:

20 A

Explanation:

Given

Spring pulled from position

x = 5A

we need to calculate total distance of one full cycle  of spring motion

if you see image below, you understand easily

When cycle complete

Its total distance become 20 A

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Answer:

The mechanical energy lost due to friction is 2,424.5 J

Explanation:

Given;

mass of the child, m = 25 kg

intial velocity of the child, u = 0

final velocity of the child, v = 7.8 m/s

initial position of the child, h₁ = 21 m

final position of the child, h₂ = 8 m

Let the energy lost due to heat = ΔE

ΔE + ΔK.E  + ΔP.E = 0

ΔE  +   ¹/₂m(v² - u²)  +  mg(h₂ - h₁) = 0

ΔE   +   ¹/₂ x 25(7.8² - 0)    +   25 x 9.8(8 - 21) = 0

ΔE   +  760.5 J   - 3185 J =

ΔE   -  2,424.5 J = 0

ΔE = 2,424.5 J

Therefore, the mechanical energy lost due to friction is 2,424.5 J

4 0
3 years ago
If I push a box at a constant rate is there friction force acting on it?
yanalaym [24]
Yes, the friction is acting in the opposite direction you are pushing.
3 0
3 years ago
How long will it take a person walking at 3.2 m/s to travel 16 m? *
BigorU [14]

Answer:

speed=distance/time

time=distance/speed

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3 0
3 years ago
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direct
-Dominant- [34]

Answer:

The velocity of the other fragment immediately following the explosion is v .

Explanation:

Given :

Mass of original shell , m .

Velocity of shell , + v .

Now , the particle explodes into two half parts , i.e  \dfrac{m}{2} .

Since , no eternal force is applied in the particle .

Therefore , its momentum will be conserved .

So , Final momentum = Initial momentum

mv=\dfrac{mv}{2}+\dfrac{mu}{2}\\\\u=v

The velocity of the other fragment immediately following the explosion is v .

4 0
3 years ago
An average person can reach a maximum height of about 65 cm when jumping straight up from a crouched position. During the jump i
Yakvenalex [24]

Answer:

a. Initial speed is zero from a crouching position...

b... Mass of body * 9.8

Explanation:

4 0
3 years ago
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