A crate remains stationary after it has been placed on a ramp inclined at an angle with the horizontal. Which of the following statements is or are correct about the magnitude of the friction force that acts on the crate? Choose all that are true.(a)It is equal to μsn.
(b)It is equal to the component of the gravitational force acting down the ramp.
(c)It is greater than the component of the gravitational force acting down the ramp.
(d)It is less than the component of the gravitational force acting down the ramp.
(e)It is larger than the weight of the crate.