Could someone please help me with this question. First of all l don't understand the last line and don't know how to do part a of the question.
A horizontal force of magnitude 20N acts on a block of mass 1.5kg, which is in equilibrium resting on a rough plane inclined at 30 degrees to the horizontal. The line of action of the force is in the same vertical plane as the line of greatest slope of the inclined plane.
a) find the magnitude and direction of the frictional force acting on the block.
Could someone please help me with this question. First of all l don't understand the last line and don't know how to do part a of the question.
A horizontal force of magnitude 20N acts on a block of mass 1.5kg, which is in equilibrium resting on a rough plane inclined at 30 degrees to the horizontal. The line of action of the force is in the same vertical plane as the line of greatest slope of the inclined plane.
a) find the magnitude and direction of the frictional force acting on the block.
Its a mistake in the book. I have seen it. The answer at the back is -2.7 but the answer in the solution bank is 22.7.
See the image from the solution bank:
If you know this then then you know in the second question after that there is also a mistake on question 10 can you please check to verify where i got 145.7 instead of 102 as it says in the book.
If you know this then then you know in the second question after that there is also a mistake on question 10 can you please check to verify where i got 145.7 instead of 102 as it says in the book.
The answer for it is 102N.
Both book and solution bank say the answer to be 102 and i also did it my self to ensure it, i get 102.