Answer:
The answer is c) same.
Explanation:
When a force is applied at some point on a rigid body, the body makes a rotational movement about the axis. Said property of the force applied to rotate the body is calculated with a magnitude known as torque, which is defined as the moment of force at a capacity of that force to make a rotation around a specific point.
for case 1, the magnitude of the torque is equal to:
τ = F*(L/2)
For case 2, the torque magnitude equals:
τ = F*sin(30°) = F*(L/2)
It can be seen that in both cases it is the same torque.
Answer:
90J
Explanation:
The only time work is being done is when he lifts the box off the ground. Therefore, using the work formula, 2 x 45, you get 90J. Hope this helps someone.
Answer:
Bones make sure the arms structure is stable while the muscle is the one actively moving it and carrying out actions.
