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galben [10]
3 years ago
6

A large semi-truck is moving a house from one lot to another. The amount of force required to move the house 15.A horizontally a

distance of 72 meters is 3.500 pewtens How much work will be done ce the house?
Physics
1 answer:
dlinn [17]3 years ago
5 0

Answer:

252J

Explanation:

Given parameters:

Distance  = 72m

Force  = 3.5N

Unknown:

Work done on the house  = ?

Solution:

Work done is the force applied to move a body through a particular distance.

    Work done  = Force x distance

Now insert the parameters and solve;

   Work done  = 3.5 x 72  = 252J

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Sterling Archer, despite failing repeatedly at pole-vaulting, is determined to master the skill. He is holding a vaulting pole p
LekaFEV [45]

Answer:

left hand: 133 N upward

right hand: 83N downward

Explanation:

10 cm = 0.1m

Let g = 10m/s2. The pole gravity force would be F_p = 5*10 = 50 N. Suppose the pole mass distribution is uniform, this means the center of mass is at its geometric center, aka 5/2 = 2.5m from the top end.

In order for the system to stay balanced, the total net force and net moment must be 0

F_L + F_R = F_p = 50 N where F_L, F_R are the forces exerted by his left and right hand, respectively.

We will pick his right hand (0.1 m from the top end) as moment pivot point. The total moment generated by pole gravity and his left hand must be 0

Distance (or moment arm length) from pole center to his right hand is R_p = 2.5 – 0.1 = 2.4 m

Moment generated by gravity around his right hand is: M_p = F_pR_p = 50*2.4 = 120 Nm counter-clockwise

Distance (or moment arm length) from left hand to his right hand is R_L = 1 – 0.1 = 0.9 m

Moment generated by force from his left hand around his right hand is: M_L = F_LR_L = 1.9F_L Nm clockwise

Since the total moment must be 0, the clockwised-direction moment = counterclockwised-direction moment:

0.9F_L = 120

F_L = 120 / 0.9 = 133 N upward

Therefore, the force exerted by his right hand must be 50 – 133 = -83 N or 83N downward

3 0
3 years ago
Which part of Earth is the coolest? the crust the mantle the outer core the inner core
Fantom [35]

The crust since it is the outermost layer. Both the cores and the mantle are underground and are involved in very high temperatures. Answer is the crust

3 0
3 years ago
Read 2 more answers
10 poin<br> What is the momentum of a 25kg cart traveling left with a velocity of 10<br> m/s?
Mashutka [201]
250 kg*m/s
Momentum is found by multiplying mass by velocity
25*10=250
7 0
3 years ago
How often do industrial oxygen cylinders need to be tested
hjlf

Answer:

5 years

5 0
3 years ago
I was playing goalie in a soccer league and made a save. The ball was traveling at 14 m/s and has a mass of 0.45 kg. How muck ki
Zigmanuir [339]

Answer:

Kinetic energy = 44.1 J

Explanation:

Given:

Velocity of ball = 14 m/s

Mass of ball = 0.45 kg

Find:

Kinetic energy

Computation:

An item's kinetic energy is force it has as a result of its motion. It is the amount of work necessary to move a body of a known volume from rest to a specified velocity.

Ke = (1/2)(m)(v²)

Ke = (1/2)(0.45)(14²)

Ke = (1/2)(0.45)(196)

Kinetic energy = 44.1 J

6 0
3 years ago
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