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
Scorpion4ik [409]
3 years ago
10

Pete slides a crate up a ramp with constant speed at an angle of 24.3 ◦ by exerting a 289 N force parallel to the ramp. How much

work has been done against gravity when the crate is raised a vertical distance of 2.39 m? The coefficient of friction is 0.33.
Physics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

W=972.73 J

Explanation:

Given that

θ = 24.3°

F= 289 N

h= 2.39 m

μ = 0.33

Given that velocity is constant is means that acceleration is zero that is why force will be balance.

Lest take mass = m

Gravity force along ramp = m g sinθ

Friction force =  μm g cosθ

F= m g sinθ  + μm g cosθ

By putting the values

F= m g (sinθ  + μcosθ)              

289 = 10 m  ( sin 24.3°+ 0.33 cos 24.3°)                 ( take g =10 m/s²)

289 = 10 m(0.71)

m = 40.7 kg

The force against gravity W

W= m g h

W= 40.7 x 10 x 2.39 J

W=972.73 J

You might be interested in
Does water transmit light
liq [111]
While the answer is that it does, it transmits light VERY poorly. Most of the light bounces off it and the rest is refracted into the ocean. This is why you can't see much that is far away from you in the ocean unlike if you're just on land.
3 0
3 years ago
Without steering, a car (mass 1501 kg) can travel with a certain speed around a banked frictionless corner angled at 25.0° to th
natima [27]

Answer:

Its tricky but am still working on it

6 0
3 years ago
HELP WILL GIVE BRAINLIEST IF CORRECT
anastassius [24]
It’s B i literally jus learned this
6 0
3 years ago
Read 2 more answers
Please answer this question
sergij07 [2.7K]

Explanation:

m = kg. v=m/s. g=m/s^2. h= m

>>1/2mv^2=mgh

>>1/2mv^2=mgh>> kg*(m/s)^2= kg*m/s^2*m

>>1/2mv^2=mgh>> kg*(m/s)^2= kg*m/s^2*m>>kg m^2/s^2=kg m^2/s^2 the fraction 1/2 won't be able to make any changes to to the dimensional expression of energy i.e half of energy is still energy therefore you can neglect the number .

<u>>>kg m^2/s^2=kg m^2/s^2</u><u> </u>

<u>></u><u>></u><u>J</u>= J

3 0
3 years ago
A relaxed spring of length 0. 13 m stands vertically on the floor; its stiffness is 1180 N/m. You release a block of mass 0. 5 k
Daniel [21]

The length of spring when the block comes momentarily to rest on the compressed spring will be 0.054 m.The length of the spring by the letter x.

<h3>What is the potential energy of the spring?</h3>

The energy is stored in the spring when it is stretched or compressed by some length. It is the product of mass, gravity and distance compressed or stretched. Mathrmatically it is given by;

PE=mgh

The given data in the problem is ;

m is the mass of the block is 0.5 kg height,

h is the height is released is 0.7 m

x initial length of the spring = 0.13 m.

K is the force constant of the spring = 1180 N/m.

By the law of conservation of energy,

The potential energy of the spring gets converted

\rm mgh=\frac{1}{2}KL^2 \\\\ \rm L= \sqrt{\frac{2mgh}{K} } \\\\ \rm L= \sqrt{\frac{2\times 0.5\times9.81 \times 0.7}{1180} \\\\  \\\\

\rm L= 0.054m

Hence the length of spring when the block comes momentarily to rest on the compressed spring will be 0.054 m

To learn more about the potential energy of the spring refer to the link;

brainly.com/question/2730954

4 0
2 years ago
Other questions:
  • Ill give 15 points to the one who helps me with this
    11·1 answer
  • A pail in a water well is hoisted by means of a frictionless winch, which consists of a spool and a hand crank. When Jill turns
    9·1 answer
  • How do you say scuba dive in spanish
    14·2 answers
  • Here is a "formula" for building a model airplane: 1 body + 2 wings + 4 jet engines + 1 tailpiece → 1 model airplane if a hobbyi
    5·2 answers
  • I need help ASAP. This is for 15 points
    8·1 answer
  • If a liquid is heated and the temperature at which it boils is measured, the _____ property is being measured.
    7·2 answers
  • A jet starts from rest and accelerates to a speed of 100 m/s in 10 seconds before taking off. how far does it travel before taki
    15·2 answers
  • What ideas do you have a bout why different places have lower or higher rates of skin cancer?
    15·1 answer
  • Lucia raced her car on a raceway
    7·2 answers
  • THIS IS MY EXAM HURRY PLS
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!