PHY 130 Free Fall and Projectile Motion Quiz Problems

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PHY 130

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plesase help wioth this test please thank you die in 9am thank you please hrlp plese

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PHY130 PART 2 of TEST 1 2020 Professor Armendariz You are required to write out the math steps for every derivation asked for; if you do not then you will not get credit for your answer. Put boxes around your final answers. 1) A person applies a pull force Fpull of 100N to a 20 kg box to to pull it down a 30o ramp; he applies the pull force at 30o counterclockwise from the ramp incline. Another person applies a push force Fpush of 50N to the box (and parallel to the ramp) to help push it down the ramp (see figure). The coefficient of static friction is 0.5 and the coefficient of kinetic friction is 0.25 a) Using Newton’s 2nd Law derive the formula for the Normal force function, and then calculate the normal force value: b) Using Newton’s 2nd Law derive the acceleration function in terms of angles, mass, & g, and then solve for the acceleration value: over c) Calculate after 5 seconds how far has the sled has moved 2) A 4 kg rock tied to the end of a 3m long string is swung in a circle at constant speed of 100 feet/sec; (ignore gravity). After it’s swung around for 20 seconds derive the following quantities: a) Centripetal acceleration: b) Total acceleration: c) Centripetal force: d) The number of revolutions the rock went through: e) The period and frequency f) Draw the rock in its circular motion with all the vectors to scale in parts a) b) and c) over
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Explanation & Answer

Here is the lab

FREE FALL AND
PROJECTILE MOTION

Name

:

PHY 132

:

Professor’s name

:

Date report submitted:

Purpose and Scientific Goals
To become familiar with the effect of gravity on the motion of projectile and to verify the
independence of the X and Y motion.
Experimental Procedure
The graphs of distance vs time, velocity vs time were plotted using given picture of the free
motion and also the projectile motion.
Data and Results
Free fall
Time/s
0
0.04
0.08
0.12
0.16
0.20
0.24
0.28
0.32
0.36
0.40

Distance
fallen/ cm
0
1
3
7
12.5
19.5
28.5
38.5
50.5
63.5
78.5

Projectile motion
Time, s

X-distance (cm)

Y-distance (cm)

0
0.04

0
5

0
1

0.08

10

3

0.12

15

7

0.16
0.20

20
25

12.5
19.5

0.24

30

28.5...


Anonymous
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