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
Ket [755]
3 years ago
11

A 2.00-kg rock has a horizontal velocity of magnitude 12.0 m>s when it is at point P in Fig. E10.35. (a) At this instant, wha

t are the magnitude and direction of its angular momentum relative to point.(b) If the only force acting on the rock is its weight, what is the rate of change (magnitude and direction) of its angular momentum at this instant?
Physics
1 answer:
zaharov [31]3 years ago
7 0

Answer:

(A) L = 115.3kgm²/s

(B) dL/dt = 94.1kgm²/s²

Explanation:

The magnitude of the angular momentum of the rock is given by the foemula

L = mvrSinθ

We have been given θ = 36.9°, m = 2.0kg, v = 12.0m/s and r = 8.0m.

Therefore L = 2.00 × 12 × 8.0 × Sin 36.9° =

115.3 kgm²/s

(B) The magnitude of the rate of angular change in momentum is given by

dL /dt = d(mvrSinθ)/dt = mgrSinθ = 2.00 × 9.8 × 8.0× Sin36.9 = 94.1kgm²/s²

You might be interested in
What is the mass of mars
tiny-mole [99]

the mass of mars is

6.39 × 10^23 kg

3 0
2 years ago
Has human activity cause the world climate to change over the past hundred years
algol13

Yes, it did help to change the world climate

for example by the Carbon Dioxide released from factories, Cars and even from respiration

3 0
3 years ago
A stone of mass 5g is projected with a rubber catapult. if the catapult is stretched through a distance of 7cm by an average for
weqwewe [10]

Explanation:

solution: mass m = 5g = 0.005kg; extension e = 7cm = 0.07m; force f = 70 N; velocity = ?; using: work done in elastic material w = 1/2 fe = 1/2 ke2 = 1/2 mv2 - the kinetic energy of the moving stone. 1/2 fe =...

4 0
2 years ago
For a concave mirror, when the object is at focus the image is formed at
Sergeeva-Olga [200]

Answer:

When the object is placed at the focus the image is formed at infinity.

Explanation:

When a ray passes through focus and incident on a concave mirror then it will travel parallel to principal axis after reflection.Hence the image is formed at infinity.

8 0
3 years ago
Energy that is passed on from one trophic level to the next is called what?
yan [13]
Energy decreases as it moves uptrophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.Trophic level transfer efficiency (TLTE) measures the amount of energy that is transferred between trophic levels.
8 0
3 years ago
Other questions:
  • The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0° above the horizo
    12·1 answer
  • An alarm clock has a resistance of 14,000 ohms and is plugged into a 120-volt outlet. How much power does the clock use?
    5·2 answers
  • A fly ball was caught by the third baseman and thrown to first base at a speed
    8·1 answer
  • Infer how distance and speed in the motions of a clock parts are used to measure time
    8·1 answer
  • Which of these hazmat products are allowed in your FC?
    5·1 answer
  • In general, what do you think are the benefits if you already achieve your body goals.​
    7·1 answer
  • How fast would a rock fall in a vacuum? Based on this, why would Aristotle say that there could be no such thing as a vacuum?
    10·1 answer
  • Does the reaction above satisfy the law of conservation of matter? Use details to support your work.
    8·1 answer
  • What is the primary mode of energy transfer from hot coffee inside a Thermos bottle to the environment
    12·1 answer
  • The rate at which work is done is called
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!