Dana has a sports medal suspended by a long ribbon from her rearview mirror. as she accelerates onto the highway, she notices th
at the medal is hanging at an angle of 15 â from the vertical. part a does the medal lean toward or away from the windshield? does the medal lean toward or away from the windshield? away from the windshield toward the windshield submitmy answersgive up correct part b what is her acceleration?
1 answer:
Refer to the diagram shown below.
m = the mass of the medal
T = the tension in the string
g = 9.8 m/s²
Part (a)
The inertial force, F, tends to move the medal away from the windshield when the vehicle accelerates to the right.
Answer: The medal leans away from the windshield.
Part (b)
For force balance,
T cos(15°) = mg
0.9659 T = 9.8m
T = 10.1457m N
Also,
F = Tsin(15°) = 10.1457m*0.2588 = 2.6257m N
The inertial force is equal to the accelerating force, therefore
the acceleration, a, is given by
(2.6257m N) = (m kg)*(a m/s²)
a = 2.6257 m/s²
Answer: 2.626 m/s²
m = the mass of the medal
T = the tension in the string
g = 9.8 m/s²
Part (a)
The inertial force, F, tends to move the medal away from the windshield when the vehicle accelerates to the right.
Answer: The medal leans away from the windshield.
Part (b)
For force balance,
T cos(15°) = mg
0.9659 T = 9.8m
T = 10.1457m N
Also,
F = Tsin(15°) = 10.1457m*0.2588 = 2.6257m N
The inertial force is equal to the accelerating force, therefore
the acceleration, a, is given by
(2.6257m N) = (m kg)*(a m/s²)
a = 2.6257 m/s²
Answer: 2.626 m/s²
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Answer:
F = -307.4 N
Explanation:
It is given that,
Mass of the baseball, m = 0.145 kg
Initial speed of the baseball, u = 60 m/s
Final speed of the baseball,
Time of contact,
(a) It is assumed to find the horizontal component of average force. It is given by :
F = -307.4 N
So, the horizontal component of average force is 307.4 N. Hence, this is the required solution.