# physics

The spring constant of the spring in the
ﬁgure is 25 N/m, and the mass of the object
is 4 kg. The spring is unstretched and the
surface is frictionless. A constant 18 N force is
applied horizontally to the object (stretching
the spring).
v0 = 0
Find the speed of the object after it has
moved a distance of 0.35 m.

1. 👍 0
2. 👎 0
3. 👁 163
1. the total energy is W+K=U
So it would be Fd+(.5*m*v^2)=.5*k*x^2
Plug in the numbers, 18*.35+.5*25*v^2=.5*25*.35^2
6.3+12.5*v^2=1.53125
v=sqrt0.3815 (ignore the negative)
v=0.61765m/s

1. 👍 0
2. 👎 0
posted by briana

## Similar Questions

1. ### Physics

A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed

asked by Tarra on February 23, 2012
2. ### physics

A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct? A. The spring constant for B is one quarter of the spring constant for A. B. The spring constant for B is 4 times the

asked by Idali on April 13, 2017
3. ### physics

A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct? A. The spring constant for B is one quarter of the spring constant for A. B. The spring constant for B is 4 times the

asked by Idali on April 23, 2017
4. ### physics

If a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured to be 1.0 cm. What is the spring constant of the spring (remember the MKS units)? A mass of 2 kg

asked by devin on November 8, 2010
5. ### physics

a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured to be 1.0 cm. What is the spring constant of the spring (remember the MKS units)? A mass of 2 kg is

asked by derek on November 10, 2010
6. ### PHYSICS

a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured to be 1.0 cm. What is the spring constant of the spring (remember the MKS units)? A mass of 2 kg is

asked by PHYSICIS HELP ASAP on November 10, 2010
7. ### Physics

1. A 5 kg weight is hung from a vertical spring. The spring stretches by 5 cm. How much mass should be hung from the spring so it will stretch by 10 cm from its original length? A. 15 kg B. 10 kg C. 20 kg D. 25 kg 2. What is the

asked by Amber on March 4, 2019
8. ### physics

Question Part Points Submissions Used 1 –/2.35 0/100 Total –/2.35 ... Janet wants to find the spring constant of a given spring, so she hangs the spring vertically and attaches a 0.53 kg mass to the spring's other end. If the

asked by hannah on March 25, 2015
9. ### physics

Janet wants to find the spring constant of a given spring, so she hangs the spring vertically and attaches a 0.42 kg mass to the spring's other end. If the spring stretches 4.0 cm from its equilibrium position, what is the spring

asked by McKenzie on February 22, 2012
10. ### Physics

A spring oriented vertically is attached to a hard horizontal surface as in the figure below. The spring has a force constant of 1.64 kN/m. How much is the spring compressed when a object of mass m = 2.35 kg is placed on top of

asked by Abdul on April 26, 2013
11. ### Physics

A body of mass m is suspended from a spring with spring constant k and the spring is stretched 0.1. If two identical bodies of mass m/2 are suspended from a spring with the same spring constant k, how much will the spring stretch?

asked by Justin on March 12, 2015

More Similar Questions