Neco 2017 Physics Question 4

Practice essay / theory question 4 from the 2017 Neco Physics examination. This question covers forces, Newton's laws, friction, inclined plane .

Neco 2017 Physics Essay / Theory
Topics: forces Newton's laws friction inclined plane
Question 4 NECO • 2017 • PHYSICS • essay

A 5.0 kg block rests on a rough inclined plane that makes an angle of 30° with the horizontal. The coefficients of static and kinetic friction between the block and the plane are 0.40 and 0.30 respectively. A horizontal force of 20 N is applied to the block, pushing it up the slope. The diagram of the situation is provided in the force diagram. Answer the following:

Question Parts

( a )
Determine the magnitude and direction of the resultant force acting on the block.
( b )
State whether the block will (i) start moving up the plane, (ii) remain at rest, or (iii) slide down the plane under the given 20 N horizontal push.
( c )
If the block were to start moving up the plane, calculate its acceleration assuming kinetic friction (μk = 0.30).
( d )
If the block remains at rest, determine the minimum additional horizontal force (in newtons) that must be applied to start moving the block up the plane.

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About This Question

This is Neco 2017 Physics Question 4. It is one of the essay questions from the 2017 Neco Physics examination.

The question covers forces, Newton's laws, friction, inclined plane .

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