Energy cannot be created nor be destroyed
Answer:
The correct answer is c
Explanation:
When a body is in rotational equilibrium, the relationship must be met
∑ τ = 0
Σ F d = 0
therefore the forces that are exerted on the body that are represented in the center of gravity are different from zero, therefore, to maintain balance the distance must be zero, therefore the center of gravity must be above the leg where the body is balancing
The correct answer is c
The x position will be "12 m" and the y position will be "-4.9 m".
According to the question,
Along x direction, Initial velocity:
Along x direction, Acceleration is:
Along y direction, Acceleration is:
Time,
→ The X coordinate will be:
=
=
=
→ The Y coordinate will be:
=
=
=
=
=
Thus the above answer is correct.
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Only units of the SI and those units recognized for use with the SI are used to express the values of quantities. Equivalent values in other units are given in parentheses following values in acceptable units only when deemed necessary for the intended audience.
The direction of rotation of a motor be changed by reversing two of its stator leads.
Electric motor is the electro-mechanical machine which converts the electrical energy into mechanical energy. In other words, the devices which produce rotational force is known as the motor.
In order to reverse the direction of an AC motor, we need to change the magnetic field the to make the movement in the opposite direction. As we change the direction of magnetic field , force will also get reversed by using Fleming's left hand rule .
Since each wire consists of a positive and negative current within the magnetic fields, the flip-flopping of main and starter wires causes the motor to run in reverse rotation
Hence, the direction of rotation of a 3-phase motor can be changed by reversing two of its stator leads.
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