Answer:
The hoop
Explanation:
We need to define the moment of inertia of the different objects, that is,
DISK:
HOOP:
SOLID SPHERE:
HOLLOW SPHERE
If we have the same acceleration for a Torque applied, then
The greatest momement of inertia is for the hoop, therefore will require the largest torque to give the same acceleration
Answer:
Answer
The Final Quality of teh R-134a in the container is 0.5056
The Total Heat transfer is
Explanation:
Explanation is in the following attachments
Answer:
Work done in lifting to a height of 1.5 m is 42.63 J.
Work done in carrying it to 50 m is 0 J
Explanation:
Given:
Mass of the pumpkin (m) = 2.9 kg
Vertical displacement of the pumpkin (y) = 1.5 m
Horizontal displacement of the pumpkin (x) = 50 m
Acceleration due to gravity (g) = 9.8 m/s²
Work done by a force is given by the formula:
Where,
Here, as the pumpkin is raised to a height 'h', there is force applied against gravity in the upward direction. So, force and displacement are in same direction and thus the angle is 0° between the force and displacement vectors.
So, work done is given as:
Force applied is equal to the gravitational force applied by the Earth but in the opposite direction.
So, Force = mg =
So, work,
So, work done in lifting the pumpkin is 42.63 J.
Now, when the pumpkin is carried to the check-out stand, the displacement is horizontal while the force applied is still in the upward direction.
So, the force and displacement are perpendicular to each other. Thus, the work done is zero.