Question

3a. With a BALL of mass 10 kg you compress a SPRING of k = 1.00 x 106 kg s-2 by Dx = 10 cm. How HIGH does the BALL fly upward when you release it? B. A person of mass 60 kg jumps from a height of 3 m. She lands on her feet but her knee joints each compress by 0.5 cm. What force did she put on her knees?

Answer #1

**PART A:**

Given that:

Mass of the ball, **m = 10 kg**

Spring constant, **K = 1 x 10 ^{6} N/m**

Spring compression, **D = 10 cm = 0.1 m**

**Apply law of conservation of energy:**

**That is the height reached by the ball is 51
m.**

**PART B:**

Apply Work - energy theorem:

Work done by the force **(F)** on knee = work done
by gravity **(U)**

**That is force on knees = 353388 N.**

With a BALL of mass 10 kg you compress a SPRING of k = 1.00 x
106 kg s-2 by x = 10 cm. How HIGH does the BALL fly upward when you
release it

a
0.2 kg mass is pushed down against a vertical spring with a spring
constant k = 1000 N/m. when the spring is compressed by 10 cm, the
object is let go. what vertical height above the release point will
the obhect reach? give answer in meters

A small spring-loaded launcher is designed to fire steel ball
bearings with masses of 0.3 kg . When setting the launcher, you
compress the spring a distance of 13 cm . You then fire the
launcher straight up and find that the projectiles reach a maximum
height of 0.9 m above the point that they leave the launcher. You
load another ball bearing, compress the spring a distance of 17 cm
, and place it horizontally at the edge of...

A spring with k=45 N/m is oriented vertically with one end fixed
to the ground. A 0.5 kg mass on top of the spring compresses
it.
1. Provide a conceptual explanation of what is happing for each
of the following cases :
a. You hold the mass while you gently compress the spring, and
when you release the mass it sits at rest atop the spring.
b. You place the mass on the uncompressed spring and release
it.
c. You...

A ball of mass m=2.00 kg is thrown vertically with velocity
v0=10.0 m/s. a) What maximum height would it reach if the average
force of air resistance were Fd= 5 N? [4.06 m] b) The ball lands on
a spring (with k=200 N/m), which brings it to a stop 1 m above the
launch point. How much would the spring compress before the ball
stops? (Assume that air resistance acts the entire way) [0.67 m] I
don't know how to...

A 2 meter long mass less spring is hanging from the ceiling. You
hang a 1 kg weight to the bottom of the spring. After the weight is
attached the spring stretches 5 cm down. You take off the weight
and removed the spring from the ceiling and place it on the floor
so it is horizontal.
1. There is no friction on the floor. Calculate the maximum
compression that the spring reaches at its relaxed position if you
fire...

A solid ball of mass 5.50 kg and radius 2.7 cm compresses a
spring of constant 1100 N/m (point A) (Ball is at rest). The ball
then rolls along a frictionless surface and goes up an incline
(starting at point B) to the top where is stops (points C). At
point B the ball is moving with a linear speed of 2.40 m/s.
Find distance the spring is compressed. (point A)
Find the max height for the ball to stop...

In her hand, a softball pitcher swings a ball of mass 0.254 kg
around a vertical circular path of radius 59.4 cm before releasing
it from her hand. The pitcher maintains a component of force on the
ball of constant magnitude 29.8 N in the direction of motion around
the complete path. The speed of the ball at the top of the circle
is 15.7 m/s. If she releases the ball at the bottom of the circle,
what is its...

You hang a 10 kg mass off of a vertical spring with a spring
constant k = 15 N/m. How much does the spring stretch? Then, you
take the spring and lay it flat on a friction-less table, anchoring
one end. You attach the same mass to free end, pull it back 0.25
meters from its equilibrium position, and let go. How fast is the
mass going at the equilibrium position?

do all five questions
Question 1
20 pts
Ignoring the effects of air resistance, if a ball falls freely
toward the ground, its total mechanical energy
Group of answer choices
increases
remains the same
not enough information
decreases
Flag this Question
Question 2
20 pts
A child jumps off a wall from an initial height of 16.4 m and lands
on a trampoline. Before the child springs back up into the air the
trampoline compresses 1.8 meters. The spring constant...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 4 hours ago