<span>θ=0.3sin(4t)
w=0.3cos(4t)(4)=1.2cos(4t)
a=-4.8sin(4t)
Knowing that the maximum of cos4t is always 1 (as seen in the cosine graph), similarly, sin4t will always equal 0
Thus, the maximum rate of w = 1.2 rad/s
vAmax=r*w=250*1.2=300 mm/s
(may vary if your graph/radius is derived from a different source)
adt=a*r=200*-4.8sin(4t)=0 (when sin(4t)=0)
adn=r*w^2=200*1.2^2=288
ad= the square root of adt^2 + adn^2 = 288 mm/s^2</span>
Answer:
The first experiment measures inertial mass, while the second experiment measures gravitational mass.
Explanation:
A student conducts two different experiments to observe resistance to changes in motion, both when at rest and in motion.
In the initial experiment, an object is forcefully pushed against a flat surface while its speed is tracked by a sensor. This setup involves work done against the object's inertia, identifying the mass as inertial mass.
Conversely, in the subsequent experiment, the object is lifted or thrown upward with an applied force and the speed is recorded. Here, the mass refers to gravitational mass, as the work performed combats gravity or the object's weight.
<span>Answer:
The correct response is
simply sum the two kinetic energies:
E = (1/2)mv^2 + (1/2)mv^2</span>
