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A 350-N Crate Is Pulled Up a 4

question 67

Multiple Choice

A 35.0-N crate is pulled up a 4.0-m inclined plane by a worker at constant velocity.If the plane is inclined at an angle of 37° to the horizontal and there exists a constant frictional force of 25.0 N between the crate and the surface,what is the force applied by the worker?

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Definitions:

Deltoid

A large, triangular muscle covering the shoulder joint and responsible for lifting and rotating the arm.

Biceps Brachii

A muscle located in the upper arm that helps control the motion of the shoulder and elbow, important for lifting and pulling actions.

Serratus Anterior

A muscle located on the side of the chest that assists in the movement of the shoulder blade (scapula), essential for activities like lifting arms and breathing.

Coracobrachialis

A muscle in the shoulder that helps in flexing and adducting the arm at the shoulder joint.