a particle moves a distance of 190 ft along a straight line. As it moves, it is acted upon by a constant force of magnitude 15 l b in a direction opposite to that of the motion. What is the work done by the force
1 answer:
Answer:
3868.1625 Nm
Explanation:
Given that:
Distance moved = 190 ft
Magnitude of force = 15 lb
Converting units :
1 lb = 4.45 Newton
1 ft = 0.305 meter
Hence,
Distance moved = (190 * 0.305) = 57.95 meter
Magnitude of force = (15 * 4.45) = 66.75 Newton
Workdone = Force * distance
Workdone = 66.75 N * 57.95 m
Workdone = 3868.1625 Nm
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Answer:
vcyl / vsph = 1.05
Explanation:
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The rotational part can be expressed as follows:
where I = moment of Inertia regarding the axis of rotation. ω = angular speed of the rotating object. If the object has a radius R, and it rolls without slipping, there is a fixed relationship between the linear and angular speed, as follows:
For a solid cylinder, I = M*R²/2 (4) Replacing (3) and (4) in (2), we get:
Adding (5) and (1), we get the total kinetic energy for the solid cylinder, as follows:
Repeating the same steps for the spherical shell:
Since we know that both masses are equal each other, we can simplify (6) and (9), cancelling both masses out. And since we also know that both objects have the same kinetic energy, this means that (6) are (9) are equal each other. Rearranging, and taking square roots on both sides, we get:
This means that the solid cylinder is 5% faster than the spherical shell, which is due to the larger moment of inertia for the shell.
his speed/ velocity is 13.5 miles per hour
Answer:
50.8 watt
Explanation:
we know that P=W÷t
W=F.S S-->distance=50 ft= 15.24 m
F=ma
=100×10=1000 N
SO W= 1000×15.24
=15240 J
NOW
P=W÷t t=5 mints = 5×60=300 sec
P=15240÷300
P=50.8 watt
The rain gets evaporated in to water vapor and is returned to the clouds where they go through condensation and then they poud down as rain or A.K.A, Precipitation.
Answer:
The answer is A
Explanation: