Jacob pushes a box up an inclined plane as shown. What forces must Jacob overcome to push it up the plane?

i. Frictional force
ii. Gravitational force
iii. Electrostatic force

i and ii only

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ii and iii only

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i and iii only

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i, ii, and iii

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Solution

The correct option is A i and ii only
The forces that Jacob should overcome are:

Gravitational force: As it pulls the box downward

Frictional force: As it opposes the motion of the block

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A. Contact force
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C. Frictional force

0.75 m / s^{2}

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