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
oksano4ka [1.4K]
1 year ago
11

How high would a skater need to start on a previous incline to make it up and around a loop that is 6.1meters high?

Physics
1 answer:
OlgaM077 [116]1 year ago
6 0

The skater need to start 7.525 meter high.

Let,

The skater need to start on a previous incline at height = h.

Mass of the skater = m

Given, height of the loop = 6.1 meter.

Radius of the loop; r = 6.1/2 meter = 3.05 meter.

Let to make it up and around a loop that is 6.1meters high, the man required minimum velocity v on the highest point of the loop.

So, centripetal force at highest point = weight of the man

⇒ mv²/r = mg

⇒ v = √(gr)

Then, potential energy of the skater at height h is = mgh.

And, minimum energy  of the skater at the highest point of the loop is = potential energy + minimum kinetic energy.

= mg(2r) + 1/2 mv²

= 2mgr + 1/2 mgr

= 5/2 mgr

According to conservation of energy,

potential energy of the skater at height h = minimum energy  of the skater at the highest point of the loop

⇒ mgh = 5/2 mgr

⇒ h = 5/2 r =( 5/2 )× 3.05 meter = 7.525 meter.

Hence, required height is 7.525 meter.

Learn more about energy here:

brainly.com/question/1932868

#SPJ1

You might be interested in
MOST elements on the periodic table are
lidiya [134]

Answer:

B

Explanation:

6 0
3 years ago
Read 2 more answers
A pure substance can be a ..................... (a) element (b) compound (c) either element or compound (d)none of these
stiks02 [169]

Answer:

C

Explanation:

An element is a pure substance that can not be broken down into anything simpler

A compound in also a pure substance held together in fixed proportion through chemical bonds

7 0
3 years ago
Read 2 more answers
PLEASE HELP
blagie [28]
Assuming Adam is on earth g= 9.8 m/s and m= weight/ gravity = 667/9.8 = 68 kg
8 0
3 years ago
How can isotopes of a given element be identified?​
marin [14]

Answer: All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom. ... Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons.

Explanation: Hopefully this helps. Have a great day.

6 0
3 years ago
Please help my test is going on. Please answer both (i) and (ii). ​
Eduardwww [97]

Answer:

i. 7.5 m

ii. 15000 N

Explanation:

Area under vt graph shows the displacement

so area of triangle ABE= 1/2×15×2

=7.5 m

ii) F=ma

here, m=1000kg

and a=v-u/t

=15-0/1

a=15

F=1000×15=15000N

8 0
3 years ago
Other questions:
  • You perform an experiment in which you measure the distance traveled by a projectile fired with different initial velocities. Wh
    11·2 answers
  • Sort the items based on whether they are simple machines or compound machines.
    12·2 answers
  • A small toy car travels 2.0 meters in 120 seconds. what is the speed of the car?
    6·1 answer
  • Which statement is true about a farsighted (hyperopic) eye?
    12·1 answer
  • Between what depths does Earth's temperature increase the slowest?
    14·1 answer
  • Hardness refers to the strength of the forces holding atoms together in a solid mineral. The Mohs scale will tell how easily a m
    8·1 answer
  • Which type of electromagnetic wave has the longest wavelength
    8·1 answer
  • during the course of songraphic exam, you notice lateral splaying of echoes in the far field. what can you do to improve the ima
    6·1 answer
  • What kind of proof is required when disproving old ideas?
    9·1 answer
  • Which atmospheric gas is used by plants and given off by animals? A. Carbon dioxide. B. Nitrogen C. Oxygen D. Argon​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!