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
aleksley [76]
2 years ago
6

A 3.20 kg block starts at rest and slides a distance d down a frictionless β = 30.0 ◦ incline, where it runs into a spring with

spring constant k = 431 N/m. The block slides an additional 21.0 cm before it is brought to rest momentarily by compressing the spring. (a) What is the value of d? (b) Where is the speed of the block at the maximum value? Is it when the block first comes into contact with the spring? If not, how much further below this point of contact does it travel before it reaches this maximum speed? Compare this point to the point where there is zero net force on the block.
Physics
1 answer:
Virty [35]2 years ago
7 0

Answer:

Explanation:

a ) work done by gravitational force

= mg sinθ ( d + .21)

Potential energy stored in compressed spring

= 1/2 k x²

= .5 x 431 x ( .21 )²

= 9.5

According to conservation of energy

mg sinθ ( d + .21)  = 9.5

3.2 x 9.8 x sin 30( d + .21 ) = 9.5

d = 40 cm

b )

As long as mg sin30 is greater than kx ( restoring force ) , there will be acceleration in the block.

mg sin30 = kx

3.2 x 9.8 x .5 = 431 x

x =  3.63 cm

When there is compression of 3.63 cm in the spring , block will have maximum velocity. there after its speed will start decreasing.

You might be interested in
What units are used to measure force
Nastasia [14]
N, or Neutons are a common way to measure force
5 0
3 years ago
Read 2 more answers
4. Ron and Hermoine are fighting over the Monster book of Monsters and they are both pulling on the book with a force of 14 N (e
marysya [2.9K]

D. The book will not move.

When two forces are pulling against each other with equal force, there is no movement since they will both cancel each other out.

5 0
3 years ago
Read 2 more answers
A coastal forest was home to a type of burrowing rodent that was not found anywhere else in the world. A year ago, a species of
Lapatulllka [165]

Answer:A

Explanation: just took it on E 2020

7 0
3 years ago
How does a physicist answer a scientific question?
egoroff_w [7]

Answer:

He does an experment.

6 0
2 years ago
Select all that apply.
Jobisdone [24]
\text{Acceleration}=\frac{d^2}{dt^2}\text{displacement}
So the dimensions of acceleration is LT^{-2}
Any answer that comes under that definition is correct.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the pressure on the bottom of a swimming pool 3. 5 m deep. How does the pressure compare with atmospheric pressure, 10
    11·1 answer
  • A room has dimensions 3.00 m (height) 3.70 m 4.30 m. A fly starting at one corner flies around, ending up at the diagonally oppo
    13·1 answer
  • How much work can be extracted from 5.00 × 10^4 J of heat when 2.00 × 10^4 J of heat is exhausted? A. - 7.00 × 10^4 J B. - 3.00
    15·1 answer
  • A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what
    5·1 answer
  • A certain sprinter has a top speed of 10.5 m/s. If the sprinter starts from rest and accelerates at a constant rate, he is able
    5·1 answer
  • A sodium lamp emits light at the power P = 70.0 W and at the wavelength λ = 600 nm, and the emission is uniformly in all directi
    10·1 answer
  • Pleeeeeeease help asap
    10·1 answer
  • If a car is rounding a flat curve on a highway, what is the centripetal force on the car?
    12·1 answer
  • If you see an object rotating, is there necessarily a net torque acting on it?
    10·1 answer
  • Q/C S Starting with the definition of work, prove that at every point on an equipotential surface, the surface must be perpendic
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!