1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maxonik [38]
3 years ago
6

A 5592 N piano is to be pushed up a(n) 3.79 m frictionless plank that makes an angle of 30.1 ◦ with the horizontal. Calculate th

e work done in sliding the piano up the plank at a slow constant rate. Answer in units of J.
Physics
2 answers:
otez555 [7]3 years ago
8 0

Answer:

10628.87 J

Explanation:

We are given that

Force applied =F=5592 N

\theta=30.1^{\circ}

Displacement=D=3.79 m

We have to find the work done in sliding the piano up the plank at a slow constant rate.

Work done=F\times displacement

The perpendicular component of force=FSin\theta=5592sin(30.1)=2804.45N

Work done =Fsin\theta\times D=2804.45\times 3.79=10628.87 J

Hence, the work done in sliding the piano up the plank at a slow constant rate=10628.87 J

sladkih [1.3K]3 years ago
5 0

Answer:s

W = - 10628.85 J

Explanation:

given,

weight of piano (mg)= 5592 N

distance of push = 3.79 m

angle = θ = 30.1°

displacement will in opposite direction of force (mg sinθ).

displacement make an angle of Φ i.e. 180° with the force

now,

Work done = F . s cos Φ

W = m g sin θ x s x cos (180°)

W = 5592 x sin 30.1° x 3.79 x cos (180°)

W = - 5592 x sin 30.1° x 3.79

W = - 10628.85 J

negative sign shows the direction of work done.

You might be interested in
Gravitational force between two objects increases as mass increases and distance
Tems11 [23]
Distance decreases.
6 0
2 years ago
A 1.11 kg piece of aluminum at 78.3 c is put into a glass with 0.210 kg of water at 15.0
ValentinkaMS [17]

M = mass of aluminium = 1.11 kg

c_{a} = specific heat of aluminium = 900

T_{ai} = initial temperature of aluminium = 78.3 c

m = mass of water = 0.210 kg

c_{w} = specific heat of water = 4186

T_{wi} = initial temperature of water = 15 c

T = final equilibrium temperature = ?

using conservation of heat

Heat lost by aluminium = heat gained by water

M c_{a} (T_{ai} - T) = m c_{w} (T - T_{wi} )

(1.11) (900) (78.3 - T) = (0.210) (4186) (T - 15)

T = 48.7 c

7 0
3 years ago
You go rock climbing with a pack that weighs 70 N and you reach a height of 30 m. how much work did you do to lift your pack? If
Vikentia [17]
When you climb, earth exerts gravitational force on pack in downward direction(pointing towards the center of earth).
In order to climb, you need to work against work done by gravity on the pack.
Hence work done by you = work done by gravity on pack 
                                        = Force x displacement = 70 x 30 = 2100 J.
 
So you need to do 2100 joules of work to lift your pack.

Power is the rate of work done.
Therefore power = work done by you/time(in seconds)
                            =     2100/600 =3.5 watts 
8 0
3 years ago
A region of space that contains no matter
sammy [17]
Conduction. Any material that easily allows heat to move through it. Vacuum. A region of space that contains no matter. Solid.
3 0
2 years ago
Read 2 more answers
Best friends Kate and Diana are at the park, watching their children play together. Kate reminds Diana about
Scorpion4ik [409]

Kate's recollection of these different events along her life best exemplifies the use of her episodic memory.

<h3>What is episodic memory?</h3>

The term episodic memory makes reference to conscious personal background experiences that were collected along life.

Episodic memory is also defined as the collection of all life-day experiences collected by a person.

The episodic memory may be, for example, the first day when a person drove his/her car or a bike.

Learn more about episodic memory here:

brainly.com/question/25040884

3 0
2 years ago
Other questions:
  • What happens that a light ray if it incident on a reflective surface along the normal
    13·1 answer
  • Which are properties of both a gas and a plasma? Check all that apply.
    14·2 answers
  • In the stream, water waves bunched up as the water flowed by. As we
    10·1 answer
  • A 60-kg box is being pushed a distance of 6.2 m across the floor by a force P with arrow whose magnitude is 150 N. The force P w
    7·1 answer
  • An experiment was devised to investigate the effects on the temperature of a cup of coffee when cream is added at different time
    11·2 answers
  • If you pedal harder so the bike tires push against the ground with
    14·1 answer
  • what moon phase will occur about 14 days after a first quarter?
    15·1 answer
  • The average speed of a plane was 600 km/hr. How long did it take
    14·1 answer
  • A
    9·1 answer
  • Images help to convey information that might sometimes be very complex if explained in words. Images also simplify certain expla
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!