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Advanced Physics
A box sits on the horizontal bed of a truck that is accelerating to the left, as shown in the diagram. Static friction between the box and the truck keeps the box from sliding around as the truck accelerates. The work done on the box by the static friction force as the accelerating truck moves a distance D to the left is A. Positive B. Zero C. Negative D. Dependent upon the speed of the truck

A box sits on the horizontal bed of a truck that is accelerating to the left, as shown in the diagram. Static friction between the box and the truck keeps the box from sliding around as the truck accelerates. The work done on the box by the static friction force as the accelerating truck moves a distance D to the left is A. Positive B. Zero C. Negative D. Dependent upon the speed of the truck

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A box sits on the horizontal bed of a truck that is accelerating to the left, as shown in the diagram. Static friction between the box and the truck keeps the box from sliding around as the truck accelerates. The work done on the box by the static friction force as the accelerating truck moves a distance D  to the left is

A. Positive

B. Zero

C. Negative

D. Dependent upon the speed of the truck

In the image, a red semi-truck is depicted moving to the left, indicated by an arrow labeled "a" pointing in that direction. Attached to the semi-truck is a large trailer. Inside the trailer, there is a blue square positioned towards the center with a force vector labeled "μ₁" directed downward at an angle. This diagram likely represents concepts in physics, possibly illustrating forces acting on a moving vehicle, such as acceleration, friction, or other dynamics, as indicated by the force vector and the movement direction.
Transcribed Image Text:In the image, a red semi-truck is depicted moving to the left, indicated by an arrow labeled "a" pointing in that direction. Attached to the semi-truck is a large trailer. Inside the trailer, there is a blue square positioned towards the center with a force vector labeled "μ₁" directed downward at an angle. This diagram likely represents concepts in physics, possibly illustrating forces acting on a moving vehicle, such as acceleration, friction, or other dynamics, as indicated by the force vector and the movement direction.
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workdone and due static frictinal force

w equals f. D space cos theta sin c e space d i s p l a c e m e n t space a n d space f o r c e space a r e space i n space s a m e space d i r e c t i o n space s o space a n g l e space b e t w e e n space f space a n d space d space i s space z e r o t h e r e f o r e space w o r k d o n e space w equals f. D space cos 0 bold italic w bold equals bold italic f bold. bold italic D

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